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智能手机 [2016/06/15 14:17]
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智能手机 [2016/06/15 14:27] (当前版本)
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-A smartphone is a mobile phone with an advanced mobile operating system which combines features of a personal computer operating system with other features useful for mobile or handheld use.[1][2][3] ​Smartphones,​ which are usually pocket-sized,​ typically combine the features of a cell phone, such as the ability to receive and make phone calls, with those of other popular digital mobile devices. Other features typically include a personal digital assistant (PDA) for making appointments in a calendar, media player, video games, GPS navigation unit, digital camera and digital video camera. Most smartphones can access the Internet and can run third-party software applications ("​apps"​). They typically have a color touchscreen user interface that covers 70% or more of the front surface, with LCD, OLED, AMOLED, LED or similar screen.+A smartphone is a mobile phone with an advanced mobile operating system which combines features of a personal computer operating system with other features useful for mobile or handheld use. Smartphones,​ which are usually pocket-sized,​ typically combine the features of a cell phone, such as the ability to receive and make phone calls, with those of other popular digital mobile devices. Other features typically include a personal digital assistant (PDA) for making appointments in a calendar, media player, video games, GPS navigation unit, digital camera and digital video camera. Most smartphones can access the Internet and can run third-party software applications ("​apps"​). They typically have a color touchscreen user interface that covers 70% or more of the front surface, with LCD, OLED, AMOLED, LED or similar screen.
  
 In 1999, the Japanese firm NTT DoCoMo released the first smartphones to achieve mass adoption within a country. Smartphones became widespread in the 21st century and most of those produced from 2012 onwards have high-speed mobile broadband 4G LTE, motion sensors, and mobile payment features. In the third quarter of 2012, one billion smartphones were in use worldwide.[4] Global smartphone sales surpassed the sales figures for regular cell phones in early 2013.[5] As of 2013, 65 percent of U.S. mobile consumers own smartphones.[6] Android and iPhone owners account for half of the cell phone user population. In 1999, the Japanese firm NTT DoCoMo released the first smartphones to achieve mass adoption within a country. Smartphones became widespread in the 21st century and most of those produced from 2012 onwards have high-speed mobile broadband 4G LTE, motion sensors, and mobile payment features. In the third quarter of 2012, one billion smartphones were in use worldwide.[4] Global smartphone sales surpassed the sales figures for regular cell phones in early 2013.[5] As of 2013, 65 percent of U.S. mobile consumers own smartphones.[6] Android and iPhone owners account for half of the cell phone user population.
  
-History[edit] +====History==== 
-Early years[edit] +===Early years===
 The first caller identification receiver (1971). The first caller identification receiver (1971).
-Devices that combined telephony and computing were first conceptualized by Nikola Tesla in 1909 and Theodore Paraskevakos in 1971 and patented in 1974, and were offered for sale beginning in 1993. Paraskevakos was the first to introduce the concepts of intelligence,​ data processing and visual display screens into telephones. In 1971, while he was working with Boeing in Huntsville, Alabama, Paraskevakos demonstrated a transmitter and receiver that provided additional ways to communicate with remote equipment, however it did not yet have general purpose PDA applications in a wireless device typical of smartphones. They were installed at Peoples'​ Telephone Company in Leesburg, Alabama and were demonstrated to several telephone companies. The original and historic working models are still in the possession of Paraskevakos.[7]+Devices that combined telephony and computing were first conceptualized by Nikola Tesla in 1909 and Theodore Paraskevakos in 1971 and patented in 1974, and were offered for sale beginning in 1993. Paraskevakos was the first to introduce the concepts of intelligence,​ data processing and visual display screens into telephones. In 1971, while he was working with Boeing in Huntsville, Alabama, Paraskevakos demonstrated a transmitter and receiver that provided additional ways to communicate with remote equipment, however it did not yet have general purpose PDA applications in a wireless device typical of smartphones. They were installed at Peoples'​ Telephone Company in Leesburg, Alabama and were demonstrated to several telephone companies. The original and historic working models are still in the possession of Paraskevakos.
  
-Forerunner[edit]+===Forerunner===
  
-IBM Simon and charging base (1994).[8]+IBM Simon and charging base (1994).
 The first mobile phone to incorporate PDA features was an IBM prototype developed in 1992 and demonstrated that year at the COMDEX computer industry trade show. The prototype demonstrated PDA features as well as other visionary apps like maps, stocks and news incorporated with a cellular phone. A refined version of the product was marketed to consumers in 1994 by BellSouth under the name Simon Personal Communicator. The Simon was the first cellular device that can be properly referred to as a "​smartphone",​ although it was not called that in 1994.[9][10][11] In addition to its ability to make and receive cellular phone calls, Simon was able to send and receive faxes and emails and included several other apps like address book, calendar, appointment scheduler, calculator, world time clock, and note pad through its touch screen display. Simon is the first smartphone to be incorporated with the features of a PDA.[12] The term "smart phone" first appeared in print in 1995, for describing AT&​T'​s "​PhoneWriter Communicator"​ as a "smart phone"​.[13] The first mobile phone to incorporate PDA features was an IBM prototype developed in 1992 and demonstrated that year at the COMDEX computer industry trade show. The prototype demonstrated PDA features as well as other visionary apps like maps, stocks and news incorporated with a cellular phone. A refined version of the product was marketed to consumers in 1994 by BellSouth under the name Simon Personal Communicator. The Simon was the first cellular device that can be properly referred to as a "​smartphone",​ although it was not called that in 1994.[9][10][11] In addition to its ability to make and receive cellular phone calls, Simon was able to send and receive faxes and emails and included several other apps like address book, calendar, appointment scheduler, calculator, world time clock, and note pad through its touch screen display. Simon is the first smartphone to be incorporated with the features of a PDA.[12] The term "smart phone" first appeared in print in 1995, for describing AT&​T'​s "​PhoneWriter Communicator"​ as a "smart phone"​.[13]
  
-PDAs[edit] +===PDAs===
-Main article: Personal digital assistant+
 In the late 1990s, many mobile phone users carried a separate dedicated PDA device, running early versions of operating systems such as Palm OS, BlackBerry OS or Windows CE/Pocket PC.[1] These operating systems would later evolve into mobile operating systems. In March 1996, Hewlett-Packard released the OmniGo 700LX, which was a modified 200LX PDA that supported a Nokia 2110-compatible phone and had integrated software built in ROM to support it. The device featured a 640x200 resolution CGA compatible 4-shade gray-scale LCD screen and could be used to make and receive calls, text messages, emails and faxes. It was also 100% DOS 5.0 compatible, allowing it to run thousands of existing software titles including early versions of Windows. In the late 1990s, many mobile phone users carried a separate dedicated PDA device, running early versions of operating systems such as Palm OS, BlackBerry OS or Windows CE/Pocket PC.[1] These operating systems would later evolve into mobile operating systems. In March 1996, Hewlett-Packard released the OmniGo 700LX, which was a modified 200LX PDA that supported a Nokia 2110-compatible phone and had integrated software built in ROM to support it. The device featured a 640x200 resolution CGA compatible 4-shade gray-scale LCD screen and could be used to make and receive calls, text messages, emails and faxes. It was also 100% DOS 5.0 compatible, allowing it to run thousands of existing software titles including early versions of Windows.
  
-In August 1996, Nokia released the Nokia 9000 Communicator which combined a PDA based on the GEOS V3.0 operating system from Geoworks with a digital cellular phone based on the Nokia 2110. The two devices were fixed together via a hinge in what became known as a clamshell design. When opened, the display was on the inside top surface and with a physical QWERTY keyboard on the bottom. The personal organizer provided e-mail, calendar, address book, calculator and notebook with text-based web browsing, and the ability to send and receive faxes. When the personal organizer was closed, it could be used as a digital cellular phone. In June 1999, Qualcomm released a "CDMA Digital PCS Smartphone"​ with integrated Palm PDA and Internet connectivity,​ known as the "pdQ Smartphone"​.[14]+In August 1996, Nokia released the Nokia 9000 Communicator which combined a PDA based on the GEOS V3.0 operating system from Geoworks with a digital cellular phone based on the Nokia 2110. The two devices were fixed together via a hinge in what became known as a clamshell design. When opened, the display was on the inside top surface and with a physical QWERTY keyboard on the bottom. The personal organizer provided e-mail, calendar, address book, calculator and notebook with text-based web browsing, and the ability to send and receive faxes. When the personal organizer was closed, it could be used as a digital cellular phone. In June 1999, Qualcomm released a "CDMA Digital PCS Smartphone"​ with integrated Palm PDA and Internet connectivity,​ known as the "pdQ Smartphone"​.
  
 In early 2000, the Ericsson R380 was released by Ericsson Mobile Communications,​[15] and was the first device marketed as a "​smartphone"​.[16] It combined the functions of a mobile phone and a PDA, supported limited web browsing with a resistive touchscreen utilizing a stylus.[17] In early 2001, Palm, Inc. introduced the Kyocera 6035, which combined a PDA with a mobile phone and operated on Verizon. It also supported limited web browsing.[18][19] In 2002, Handspring released the Treo 180, the first smartphone to combine Palm OS and a GSM phone, with telephony, SMS messaging and Internet access fully integrated into Palm OS.[20] Smartphones before Android, iOS and BlackBerry, typically ran on Symbian, which was originally developed by Psion. It was the world'​s most widely used smartphone operating system until the last quarter of 2010.[citation needed] In early 2000, the Ericsson R380 was released by Ericsson Mobile Communications,​[15] and was the first device marketed as a "​smartphone"​.[16] It combined the functions of a mobile phone and a PDA, supported limited web browsing with a resistive touchscreen utilizing a stylus.[17] In early 2001, Palm, Inc. introduced the Kyocera 6035, which combined a PDA with a mobile phone and operated on Verizon. It also supported limited web browsing.[18][19] In 2002, Handspring released the Treo 180, the first smartphone to combine Palm OS and a GSM phone, with telephony, SMS messaging and Internet access fully integrated into Palm OS.[20] Smartphones before Android, iOS and BlackBerry, typically ran on Symbian, which was originally developed by Psion. It was the world'​s most widely used smartphone operating system until the last quarter of 2010.[citation needed]
  
-Mass adoption[edit]+===Mass adoption===
 In 1999, the Japanese firm NTT DoCoMo released the first smartphones to achieve mass adoption within a country. These phones ran on i-mode, which provided data transmission speeds up to 9.6 kbit/s.[21] Unlike future generations of wireless services, NTT DoCoMo'​s i-mode used cHTML, a language which restricted some aspects of traditional HTML in favor of increasing data speed for the devices. Limited functionality,​ small screens and limited bandwidth allowed for phones to use the slower data speeds available.[22] In 1999, the Japanese firm NTT DoCoMo released the first smartphones to achieve mass adoption within a country. These phones ran on i-mode, which provided data transmission speeds up to 9.6 kbit/s.[21] Unlike future generations of wireless services, NTT DoCoMo'​s i-mode used cHTML, a language which restricted some aspects of traditional HTML in favor of increasing data speed for the devices. Limited functionality,​ small screens and limited bandwidth allowed for phones to use the slower data speeds available.[22]
  
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 Outside Japan smartphones were still rare until the introduction of the Danger Hiptop in 2002, which saw moderate success in the US as the T-Mobile Sidekick. Later, in the mid-2000s, devices based on Microsoft'​s Windows Mobile started to gain popularity among business users in the U.S. The BlackBerry later gained mass adoption in the U.S., and American users popularized the term "​CrackBerry"​ in 2006 due to its addictive nature.[24] The company first released its GSM BlackBerry 6210, BlackBerry 6220, and BlackBerry 6230 devices in 2003.[25] Outside Japan smartphones were still rare until the introduction of the Danger Hiptop in 2002, which saw moderate success in the US as the T-Mobile Sidekick. Later, in the mid-2000s, devices based on Microsoft'​s Windows Mobile started to gain popularity among business users in the U.S. The BlackBerry later gained mass adoption in the U.S., and American users popularized the term "​CrackBerry"​ in 2006 due to its addictive nature.[24] The company first released its GSM BlackBerry 6210, BlackBerry 6220, and BlackBerry 6230 devices in 2003.[25]
  
-Operating systems[edit] +====Operating systems==== 
-Symbian was the most popular smartphone OS in Europe during the middle to late 2000s. Initially, Nokia'​s Symbian devices were focused on business, similar to Windows Mobile and BlackBerry devices at the time. From 2006 onwards, Nokia started producing entertainment-focused smartphones,​ popularized by the Nseries. In Asia, with the exception of Japan, the trend was similar to that of Europe.[citation needed]+Symbian was the most popular smartphone OS in Europe during the middle to late 2000s. Initially, Nokia'​s Symbian devices were focused on business, similar to Windows Mobile and BlackBerry devices at the time. From 2006 onwards, Nokia started producing entertainment-focused smartphones,​ popularized by the Nseries. In Asia, with the exception of Japan, the trend was similar to that of Europe.
  
 In 2003, Motorola launched the first smartphone to use Linux, the A760 handset.[26] While the initial release was limited to a single high-end handset only available in the Asia-Pacific region, the maker'​s intention was to eventually use Linux on most of its handsets, including the lower-end models. Further models to use Linux such as the Motorola Ming A1200i in 2005 and several successors to the Ming line would be unveiled through 2010. In late 2009, Motorola released the Motorola Cliq,[27] the first of Motorola'​s smart phones to run the Linux-based Android operating system. In 2003, Motorola launched the first smartphone to use Linux, the A760 handset.[26] While the initial release was limited to a single high-end handset only available in the Asia-Pacific region, the maker'​s intention was to eventually use Linux on most of its handsets, including the lower-end models. Further models to use Linux such as the Motorola Ming A1200i in 2005 and several successors to the Ming line would be unveiled through 2010. In late 2009, Motorola released the Motorola Cliq,[27] the first of Motorola'​s smart phones to run the Linux-based Android operating system.
  
-In early 2007, Apple Inc. introduced the iPhone, one of the first smartphones to use a multi-touch interface. The iPhone was notable for its use of a large touchscreen for direct finger input as its main means of interaction,​ instead of a stylus, keyboard, or keypad typical for smartphones at the time.[28]+In early 2007, Apple Inc. introduced the iPhone, one of the first smartphones to use a multi-touch interface. The iPhone was notable for its use of a large touchscreen for direct finger input as its main means of interaction,​ instead of a stylus, keyboard, or keypad typical for smartphones at the time.
  
-In October 2008, the first phone to use Android called the HTC Dream (also known as the T-Mobile G1) was released.[29][30] ​Android is an open-source platform founded by Andy Rubin and now owned by Google.[31][32] ​Although Android'​s adoption was relatively slow at first, it started to gain widespread popularity in 2010, and in early 2012 dominated the smartphone market share worldwide, which continues to this day.[33]+In October 2008, the first phone to use Android called the HTC Dream (also known as the T-Mobile G1) was released. Android is an open-source platform founded by Andy Rubin and now owned by Google. Although Android'​s adoption was relatively slow at first, it started to gain widespread popularity in 2010, and in early 2012 dominated the smartphone market share worldwide, which continues to this day.
  
 These new platforms led to the decline of earlier ones. Microsoft, for instance, started a new OS from scratch, called Windows Phone. Nokia abandoned Symbian and partnered with Microsoft to use Windows Phone on its smartphones. Windows Phone then became the third-most-popular OS. Palm's webOS was bought by Hewlett-Packard and later sold to LG Electronics for use on LG smart TVs. BlackBerry Limited, formerly known as Research In Motion, also made a new platform based on QNX, BlackBerry 10. These new platforms led to the decline of earlier ones. Microsoft, for instance, started a new OS from scratch, called Windows Phone. Nokia abandoned Symbian and partnered with Microsoft to use Windows Phone on its smartphones. Windows Phone then became the third-most-popular OS. Palm's webOS was bought by Hewlett-Packard and later sold to LG Electronics for use on LG smart TVs. BlackBerry Limited, formerly known as Research In Motion, also made a new platform based on QNX, BlackBerry 10.
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 Smartphones are increasingly integrated with everyday uses. For instance, credit cards, mobile payments, and mobile banking are integrated into smartphone applications and SaaS platforms.[42] Additionally,​ recent technological innovations are causing keys to be fused into the smartphones,​ where the smartphone can act as a digital key and access badge for its users.[43] Smartphones are increasingly integrated with everyday uses. For instance, credit cards, mobile payments, and mobile banking are integrated into smartphone applications and SaaS platforms.[42] Additionally,​ recent technological innovations are causing keys to be fused into the smartphones,​ where the smartphone can act as a digital key and access badge for its users.[43]
 Since 2013, water and dustproofing have made their way into mainstream high end smartphones including Sony Xperia Z, Sony Xperia Z3 and Samsung Galaxy S5.[44] Previously, this feature was confined to special ruggedized phones. Since 2013, water and dustproofing have made their way into mainstream high end smartphones including Sony Xperia Z, Sony Xperia Z3 and Samsung Galaxy S5.[44] Previously, this feature was confined to special ruggedized phones.
-LG introduced lasers on the LG G3 to help camera focus.[45]+LG introduced lasers on the LG G3 to help camera focus.
  
-Microsoft Lumia 950XL was the first phone to have Windows Continuum[46] +Microsoft Lumia 950XL was the first phone to have Windows Continuum 
-Some smartphones can be categorized as high-end point-and-shoot cameras with large sensors up to 1" with 20 megapixels and 4K video. Some can store their pictures in proprietary raw image format, but the Android (operating system) 5.0 Lollipop serves open source RAW images.[47][48]+Some smartphones can be categorized as high-end point-and-shoot cameras with large sensors up to 1" with 20 megapixels and 4K video. Some can store their pictures in proprietary raw image format, but the Android (operating system) 5.0 Lollipop serves open source RAW images.
 In October 2015, Microsoft announced Windows Continuum, a feature that allows users to connect their devices to an external monitor via Microsoft Continuum Display Dock.[46] HP adds a layer to the Continuum with their HP Workplace which enables user to run a Win32 app by a virtualized server.[49] In October 2015, Microsoft announced Windows Continuum, a feature that allows users to connect their devices to an external monitor via Microsoft Continuum Display Dock.[46] HP adds a layer to the Continuum with their HP Workplace which enables user to run a Win32 app by a virtualized server.[49]
 The first modular smartphone available to the public is the Fairphone 2 and it was released in December 2015; users can remove and replace parts. The first modular smartphone available to the public is the Fairphone 2 and it was released in December 2015; users can remove and replace parts.
-Future possible developments[edit]+ 
 +===Future possible developments===
 Foldable OLED smartphones could be as much as a decade away because of the cost of producing them. There is a relatively high failure rate when producing these screens. As little as a speck of dust can ruin a screen during production. Creating a battery that can be folded is another hurdle.[50] Foldable OLED smartphones could be as much as a decade away because of the cost of producing them. There is a relatively high failure rate when producing these screens. As little as a speck of dust can ruin a screen during production. Creating a battery that can be folded is another hurdle.[50]
 Near future smartphones might not have a traditional battery as their sole source of power. Instead, they may pull energy from radio, television, cellular or Wi-Fi signals.[51] Near future smartphones might not have a traditional battery as their sole source of power. Instead, they may pull energy from radio, television, cellular or Wi-Fi signals.[51]
-Mobile operating systems[edit] 
-Main article: Mobile operating system 
-Android[edit] 
-Main article: Android (operating system) 
-Android is a mobile operating system developed by Google Inc., and backed by an industry consortium known as the Open Handset Alliance. It is an open source platform with optional proprietary components, including a suite of flagship software for Google services, and the application and content storefront Google Play.[52] Android was officially introduced via the release of its inaugural device, the HTC Dream (T-Mobile G1) on 20 October 2008.[53] 
  
-As an open source product, Android has also been the subject of third-party development;​ development groups have used the Android source code to develop and distribute their own modified versions of the operating system, such as CyanogenMod,​ to add features to the OS and provide newer versions of Android to devices that no longer receive official updates from their vendor.[54][55][56] ​Forked versions of Android have also adopted by other vendors, such as Amazon.com, who used its "Fire OS" on a range of tablets and the Fire Phone.[57][58]+====Mobile operating systems==== 
 +===Android=== 
 +Android is a mobile operating system developed by Google Inc., and backed by an industry consortium known as the Open Handset Alliance. It is an open source platform with optional proprietary components, including a suite of flagship software for Google services, and the application and content storefront Google Play.[52] Android was officially introduced via the release of its inaugural device, the HTC Dream (T-Mobile G1) on 20 October 2008. 
 + 
 +As an open source product, Android has also been the subject of third-party development;​ development groups have used the Android source code to develop and distribute their own modified versions of the operating system, such as CyanogenMod,​ to add features to the OS and provide newer versions of Android to devices that no longer receive official updates from their vendor.Forked versions of Android have also adopted by other vendors, such as Amazon.com, who used its "Fire OS" on a range of tablets and the Fire Phone.
  
-Due to the wide array of smartphones shipped with the OS—covering a wide range of market segments—Android has seen significant adoption. Gartner Research estimated that 325 million Android smartphones were sold during the fourth quarter of 2015, leading all other platforms. Samsung Electronics,​ who produces Android devices, was also the top smartphone vendor across all platforms in the same period of time.[59]+Due to the wide array of smartphones shipped with the OS—covering a wide range of market segments—Android has seen significant adoption. Gartner Research estimated that 325 million Android smartphones were sold during the fourth quarter of 2015, leading all other platforms. Samsung Electronics,​ who produces Android devices, was also the top smartphone vendor across all platforms in the same period of time.
  
-iOS[edit] +===iOS=== 
-Main article: iOS +iOS (formerly iPhone OS) is a proprietary mobile operating system developed by Apple Inc. primarily for its iPhone product line. The iPhone was first unveiled in January 2007. The device introduced numerous design concepts that have been adopted by modern smartphone platforms, such as the use of multi-touch gestures for navigation, eschewing physical controls in favor of those rendered by the operating system itself on its touchscreen (including the keyboard), and the use of skeumorphism—making features and controls within the user interface resemble real-world objects and concepts in order to improve their usability.
-iOS (formerly iPhone OS) is a proprietary mobile operating system developed by Apple Inc. primarily for its iPhone product line. The iPhone was first unveiled in January 2007. The device introduced numerous design concepts that have been adopted by modern smartphone platforms, such as the use of multi-touch gestures for navigation, eschewing physical controls in favor of those rendered by the operating system itself on its touchscreen (including the keyboard), and the use of skeumorphism—making features and controls within the user interface resemble real-world objects and concepts in order to improve their usability.[60][61]+
  
 In 2008, Apple introduced the App Store, a centralized storefront for purchasing new software for iPhone devices.[62][63] iOS can also integrate with Apple'​s desktop music program iTunes to sync media to a personal computer.[64][65] The dependency on a PC was removed with the introduction of iCloud on later versions of iOS, which provides synchronization of user data via internet servers between multiple devices.[66] In 2008, Apple introduced the App Store, a centralized storefront for purchasing new software for iPhone devices.[62][63] iOS can also integrate with Apple'​s desktop music program iTunes to sync media to a personal computer.[64][65] The dependency on a PC was removed with the introduction of iCloud on later versions of iOS, which provides synchronization of user data via internet servers between multiple devices.[66]
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 The iPhone line's early dominance was credited with reshaping the smartphone industry, and helping make Apple one of the world'​s most valuable publicly traded companies by 2011. However, the iPhone and iOS have generally been in second place in worldwide market share.[59][67][68] The iPhone line's early dominance was credited with reshaping the smartphone industry, and helping make Apple one of the world'​s most valuable publicly traded companies by 2011. However, the iPhone and iOS have generally been in second place in worldwide market share.[59][67][68]
  
-Windows Phone[edit] +===Windows Phone=== 
-Main article: Windows Phone +Windows Phone is a series of smartphone operating systems developed by Microsoft. Its original release, Windows Phone 7, was a revamped version of the previous, Windows CE-based Windows Mobile platform; however, it was incompatible with the legacy platform.[69] Windows Phone'​s user interface was designed to contrast with its competitors,​ utilizing a design language codenamed "​Metro"​ which de-emphasized iconography and skeuomorphism in favor of flat, text-based designs. The platform also featured concepts such as "live tiles" on its home screen that can display dynamic content, and "​Hubs"​—which aggregate content from various sources and services (such as a user's local contacts, in combination with connected social networking services) into unified displays. Windows Phone also integrated with other Microsoft brands and platforms, including Bing, SkyDrive, and Xbox. Microsoft Office Mobile apps were also bundled with the operating system.
-Windows Phone is a series of smartphone operating systems developed by Microsoft. Its original release, Windows Phone 7, was a revamped version of the previous, Windows CE-based Windows Mobile platform; however, it was incompatible with the legacy platform.[69] Windows Phone'​s user interface was designed to contrast with its competitors,​ utilizing a design language codenamed "​Metro"​ which de-emphasized iconography and skeuomorphism in favor of flat, text-based designs. The platform also featured concepts such as "live tiles" on its home screen that can display dynamic content, and "​Hubs"​—which aggregate content from various sources and services (such as a user's local contacts, in combination with connected social networking services) into unified displays. Windows Phone also integrated with other Microsoft brands and platforms, including Bing, SkyDrive, and Xbox. Microsoft Office Mobile apps were also bundled with the operating system.[70][71][72]+
  
 Windows Phone 8 was released in 2012; it was incompatible with existing devices, but switched to a core system based on the Windows NT platform, expanded the platform'​s hardware support and functionality,​ and added expanded enterprise-oriented functionality such as storage encryption.[73][74][75] Windows 10 Mobile was released in late-2015; it is no longer promoted under the Windows Phone brand, as it is intended to provide greater consistency and integration with Windows 10 for PC, including cross-platform applications via Universal Windows Platform, and the ability to dock supported devices to use a desktop interface with keyboard and mouse support.[76][77][78] Windows Phone 8 was released in 2012; it was incompatible with existing devices, but switched to a core system based on the Windows NT platform, expanded the platform'​s hardware support and functionality,​ and added expanded enterprise-oriented functionality such as storage encryption.[73][74][75] Windows 10 Mobile was released in late-2015; it is no longer promoted under the Windows Phone brand, as it is intended to provide greater consistency and integration with Windows 10 for PC, including cross-platform applications via Universal Windows Platform, and the ability to dock supported devices to use a desktop interface with keyboard and mouse support.[76][77][78]
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 The Windows Phone series has had poor adoption in comparison to its competitors. Lack of interest in the platform also led to a decrease in third-party applications,​ and some vendors ended their support for Windows Phone altogether. [59][79][80] The most prominent Windows Phone vendor was Nokia, who exclusively adopted Windows Phone as its smartphone platform in 2011 as part of a wider partnership with Microsoft.[81] Nokia'​s Lumia series was the most popular line of Windows Phone devices, representing 83.3% of all Windows Phones sold in June 2013,[82] and Microsoft acquired Nokia'​s mobile business for just over €5.44 billion in April 2014, forming the subsidiary Microsoft Mobile under former Nokia CEO Stephen Elop [83][84][85] The Windows Phone series has had poor adoption in comparison to its competitors. Lack of interest in the platform also led to a decrease in third-party applications,​ and some vendors ended their support for Windows Phone altogether. [59][79][80] The most prominent Windows Phone vendor was Nokia, who exclusively adopted Windows Phone as its smartphone platform in 2011 as part of a wider partnership with Microsoft.[81] Nokia'​s Lumia series was the most popular line of Windows Phone devices, representing 83.3% of all Windows Phones sold in June 2013,[82] and Microsoft acquired Nokia'​s mobile business for just over €5.44 billion in April 2014, forming the subsidiary Microsoft Mobile under former Nokia CEO Stephen Elop [83][84][85]
  
-BlackBerry[edit] +===BlackBerry===
-Main article: BlackBerry+
 In 1999, RIM released its first BlackBerry devices, providing secure real-time push-email communications on wireless devices. Services such as BlackBerry Messenger provide the integration of all communications into a single inbox. In September 2012, RIM announced that the 200 millionth BlackBerry smartphone was shipped. As of September 2014, there are around 46 million active BlackBerry service subscribers.[86] Most recently, RIM has undergone a platform transition, changing its name to BlackBerry and making new devices on a new platform named "​BlackBerry 10"​[87] and in November 2015 released an Android smartphone, the BlackBerry Priv.[88] In 1999, RIM released its first BlackBerry devices, providing secure real-time push-email communications on wireless devices. Services such as BlackBerry Messenger provide the integration of all communications into a single inbox. In September 2012, RIM announced that the 200 millionth BlackBerry smartphone was shipped. As of September 2014, there are around 46 million active BlackBerry service subscribers.[86] Most recently, RIM has undergone a platform transition, changing its name to BlackBerry and making new devices on a new platform named "​BlackBerry 10"​[87] and in November 2015 released an Android smartphone, the BlackBerry Priv.[88]
  
-Sailfish OS[edit] +===Sailfish OS===
-Main article: Sailfish OS+
 The Sailfish OS is based on the Linux kernel and Mer.[89] Additionally Sailfish OS includes a partially or completely proprietary multi-tasking user interface programmed by Jolla. This user interface differentiate Jolla smartphones from others.[90] Sailfish OS is intended to be a system made by many of the MeeGo team, which left Nokia to form Jolla, utilizing funding from Nokia'​s "​Bridge"​ program which helps establish and support start-up companies formed by ex-Nokia employees.[91][92][93] The Sailfish OS is based on the Linux kernel and Mer.[89] Additionally Sailfish OS includes a partially or completely proprietary multi-tasking user interface programmed by Jolla. This user interface differentiate Jolla smartphones from others.[90] Sailfish OS is intended to be a system made by many of the MeeGo team, which left Nokia to form Jolla, utilizing funding from Nokia'​s "​Bridge"​ program which helps establish and support start-up companies formed by ex-Nokia employees.[91][92][93]
  
-Tizen[edit] +===Tizen===
-Main article: Tizen+
 Tizen is a Linux-based operating system for devices, including smartphones,​ tablets, in-vehicle infotainment (IVI) devices, smart TVs, laptops and smart cameras. Tizen is a project within the Linux Foundation and is governed by a Technical Steering Group (TSG) composed of Samsung and Intel among others. In April 2014, Samsung released the Samsung Gear 2 and the Gear 2 Neo, running Tizen.[94] The Samsung Z1 is the first smartphone produced by Samsung that runs Tizen; it was released in the Indian market on January 14, 2015.[95] Tizen is a Linux-based operating system for devices, including smartphones,​ tablets, in-vehicle infotainment (IVI) devices, smart TVs, laptops and smart cameras. Tizen is a project within the Linux Foundation and is governed by a Technical Steering Group (TSG) composed of Samsung and Intel among others. In April 2014, Samsung released the Samsung Gear 2 and the Gear 2 Neo, running Tizen.[94] The Samsung Z1 is the first smartphone produced by Samsung that runs Tizen; it was released in the Indian market on January 14, 2015.[95]
  
-Ubuntu Touch[edit] +===Ubuntu Touch===
-Main article: Ubuntu Touch+
 Ubuntu Touch (also known as Ubuntu Phone) is a mobile version of the Ubuntu operating system developed by Canonical UK Ltd and Ubuntu Community.[96] It is designed primarily for touchscreen mobile devices such as smartphones and tablet computers. Ubuntu Touch (also known as Ubuntu Phone) is a mobile version of the Ubuntu operating system developed by Canonical UK Ltd and Ubuntu Community.[96] It is designed primarily for touchscreen mobile devices such as smartphones and tablet computers.
  
-Discontinued mobile operating systems[edit] +====Discontinued mobile operating systems==== 
-Symbian[edit] +===Symbian===
-Main article: Symbian+
 Symbian was originally developed by Psion as EPOC32. It was the world'​s most widely used smartphone operating system until Q4 2010, though the platform never gained popularity or widespread awareness in the U.S., as it did in Europe and Asia. The first Symbian phone, the touchscreen Ericsson R380 Smartphone, was released in 2000,​[97][98] and was the first device marketed as a "​smartphone"​.[99] It combined a PDA with a mobile phone.[100] Variants of Symbian OS began to emerge, most notably Symbian UIQ, MOAP and S60, each supported by different manufacturers. With the creation of Symbian Foundation in 2008, Symbian OS was unified under one variant under the stewardship of Nokia. In February 2011, Nokia announced that it would replace Symbian with Windows Phone as the operating system on all of its future smartphones,​ with the platform getting abandoned throughout the following few years.[101] Symbian was originally developed by Psion as EPOC32. It was the world'​s most widely used smartphone operating system until Q4 2010, though the platform never gained popularity or widespread awareness in the U.S., as it did in Europe and Asia. The first Symbian phone, the touchscreen Ericsson R380 Smartphone, was released in 2000,​[97][98] and was the first device marketed as a "​smartphone"​.[99] It combined a PDA with a mobile phone.[100] Variants of Symbian OS began to emerge, most notably Symbian UIQ, MOAP and S60, each supported by different manufacturers. With the creation of Symbian Foundation in 2008, Symbian OS was unified under one variant under the stewardship of Nokia. In February 2011, Nokia announced that it would replace Symbian with Windows Phone as the operating system on all of its future smartphones,​ with the platform getting abandoned throughout the following few years.[101]
  
-Windows Mobile[edit] +===Windows Mobile===
-Main article: Windows Mobile+
 Windows Mobile was based on the Windows CE kernel and first appeared as the Pocket PC 2000 operating system. Throughout its lifespan, the operating system was available in both touchscreen and non-touchscreen formats. It was supplied with a suite of applications developed with the Microsoft Windows API and was designed to have features and appearance somewhat similar to desktop versions of Windows. Third parties could develop software for Windows Mobile with no restrictions imposed by Microsoft. Software applications were eventually purchasable from Windows Marketplace for Mobile during the service'​s brief lifespan. Windows Mobile was phased out in favor of Windows Phone. Windows Mobile was based on the Windows CE kernel and first appeared as the Pocket PC 2000 operating system. Throughout its lifespan, the operating system was available in both touchscreen and non-touchscreen formats. It was supplied with a suite of applications developed with the Microsoft Windows API and was designed to have features and appearance somewhat similar to desktop versions of Windows. Third parties could develop software for Windows Mobile with no restrictions imposed by Microsoft. Software applications were eventually purchasable from Windows Marketplace for Mobile during the service'​s brief lifespan. Windows Mobile was phased out in favor of Windows Phone.
  
-Bada[edit] +===Bada===
-Main article: Bada+
 The Bada operating system for smartphones was announced by Samsung in November 2009.[102][103] The first Bada-based phone was the Samsung Wave S8500, released in June 2010.[104][105] Samsung shipped 4.5 million phones running Bada in Q2 of 2011.[106] In 2013, Bada merged with a similar platform called Tizen. The Bada operating system for smartphones was announced by Samsung in November 2009.[102][103] The first Bada-based phone was the Samsung Wave S8500, released in June 2010.[104][105] Samsung shipped 4.5 million phones running Bada in Q2 of 2011.[106] In 2013, Bada merged with a similar platform called Tizen.
  
-Firefox OS[edit] +===Firefox OS===
-Main article: Firefox OS+
 Firefox OS was demonstrated by Mozilla in February 2012. It was designed to have a complete community based alternative system for mobile devices, using open standards and HTML5 applications. The first commercially available Firefox OS phones were ZTE Open and Alcatel One Touch Fire. As of 2014 more companies have partnered with Mozilla including Panasonic (which is making a smart TV with Firefox OS) and Sony.[107] Firefox OS was demonstrated by Mozilla in February 2012. It was designed to have a complete community based alternative system for mobile devices, using open standards and HTML5 applications. The first commercially available Firefox OS phones were ZTE Open and Alcatel One Touch Fire. As of 2014 more companies have partnered with Mozilla including Panasonic (which is making a smart TV with Firefox OS) and Sony.[107]
  
-In December 2015, Mozilla announced that it would phase out development of Firefox OS for smartphones,​ and would reposition the project to focus on other forms of internet-connected devices.[108]+In December 2015, Mozilla announced that it would phase out development of Firefox OS for smartphones,​ and would reposition the project to focus on other forms of internet-connected devices.
  
-Palm OS[edit] +===Palm OS===
-Main article: Palm OS+
 In late 2001, Handspring launched the Springboard GSM phone module with limited success. In May 2002, Handspring released the Palm OS Treo 270 smartphone, that did not support Springboard,​ with both a touchscreen and a full keyboard. The Treo had wireless web browsing, email, calendar, a contact organizer and mobile third-party applications that could be downloaded or synced with a computer.[109] Handspring was purchased by Palm, Inc which released the Treo 600 and continued releasing Treo devices with a few Treo devices using Windows Mobile. After buying Palm in 2011, Hewlett-Packard (HP) discontinued its webOS smartphone and tablet production.[110] In late 2001, Handspring launched the Springboard GSM phone module with limited success. In May 2002, Handspring released the Palm OS Treo 270 smartphone, that did not support Springboard,​ with both a touchscreen and a full keyboard. The Treo had wireless web browsing, email, calendar, a contact organizer and mobile third-party applications that could be downloaded or synced with a computer.[109] Handspring was purchased by Palm, Inc which released the Treo 600 and continued releasing Treo devices with a few Treo devices using Windows Mobile. After buying Palm in 2011, Hewlett-Packard (HP) discontinued its webOS smartphone and tablet production.[110]
  
-webOS[edit] +===webOS===
-Main article: webOS+
 webOS is a proprietary mobile operating system running on the Linux kernel, initially developed by Palm, which launched with the Palm Pre. After being acquired by HP, two phones (the Veer and the Pre 3) and a tablet (the TouchPad) running webOS were introduced in 2011. On August 18, 2011, HP announced that webOS hardware was to be discontinued[111] but would continue to support and update webOS software and develop the webOS ecosystem.[112] HP released webOS as open source under the name Open webOS, and plans to update it with additional features.[113] On February 25, 2013 HP announced the sale of WebOS to LG Electronics,​ who used the operating system for its current "​smart"​ or Internet-connected TVs, but not smartphones. In January 2014, Qualcomm has announced that it has acquired technology patents from HP, which includes all the WebOS patents.[114] webOS is a proprietary mobile operating system running on the Linux kernel, initially developed by Palm, which launched with the Palm Pre. After being acquired by HP, two phones (the Veer and the Pre 3) and a tablet (the TouchPad) running webOS were introduced in 2011. On August 18, 2011, HP announced that webOS hardware was to be discontinued[111] but would continue to support and update webOS software and develop the webOS ecosystem.[112] HP released webOS as open source under the name Open webOS, and plans to update it with additional features.[113] On February 25, 2013 HP announced the sale of WebOS to LG Electronics,​ who used the operating system for its current "​smart"​ or Internet-connected TVs, but not smartphones. In January 2014, Qualcomm has announced that it has acquired technology patents from HP, which includes all the WebOS patents.[114]
  
-Maemo / MeeGo[edit] +===Maemo / MeeGo===
-Main article: MeeGo+
 MeeGo is an operating system created from the source code of Moblin (produced by Intel) and Maemo (produced by Nokia). Before that, Nokia used Maemo on some of its smartphones and internet tablets (such as Nokia N810 and N900). MeeGo was originally envisioned to power a variety of devices from netbooks, tablets to smartphones and smart TVs. However, the only smartphones which used MeeGo was the Nokia N9 and Nokia N950 (MeeGo v1.2 Harmattan). Following Nokia'​s decision to move to Windows Phone OS in 2011 and to cease MeeGo development,​ the Linux Foundation canceled MeeGo in September 2011 in favor of the development of Tizen. MeeGo is an operating system created from the source code of Moblin (produced by Intel) and Maemo (produced by Nokia). Before that, Nokia used Maemo on some of its smartphones and internet tablets (such as Nokia N810 and N900). MeeGo was originally envisioned to power a variety of devices from netbooks, tablets to smartphones and smart TVs. However, the only smartphones which used MeeGo was the Nokia N9 and Nokia N950 (MeeGo v1.2 Harmattan). Following Nokia'​s decision to move to Windows Phone OS in 2011 and to cease MeeGo development,​ the Linux Foundation canceled MeeGo in September 2011 in favor of the development of Tizen.
  
-Application stores[edit] +====Application stores====
-Main article: List of digital distribution platforms for mobile devices+
 The introduction of Apple'​s App Store for the iPhone and iPod Touch in July 2008 popularized manufacturer-hosted online distribution for third-party applications (software, computer programs) focused on a single platform. Up until that point, smartphone application distribution depended on third-party sources providing applications for multiple platforms, such as GetJar, Handango, Handmark, and PocketGear. The introduction of Apple'​s App Store for the iPhone and iPod Touch in July 2008 popularized manufacturer-hosted online distribution for third-party applications (software, computer programs) focused on a single platform. Up until that point, smartphone application distribution depended on third-party sources providing applications for multiple platforms, such as GetJar, Handango, Handmark, and PocketGear.
  
 Following the success of the App Store, other smartphone manufacturers launched application stores, such as Google'​s Android Market (now Google Play Store) and RIM's BlackBerry App World in April 2009. In February 2014, 93% of mobile developers were targeting smartphones first for mobile app development.[115] Following the success of the App Store, other smartphone manufacturers launched application stores, such as Google'​s Android Market (now Google Play Store) and RIM's BlackBerry App World in April 2009. In February 2014, 93% of mobile developers were targeting smartphones first for mobile app development.[115]
  
-Display[edit] +====Display====
-Main article: Display device +
 Samsung Galaxy S6(5.1 inches), S6 Edge(5.1 inches), S6 Edge+(5.7 inches) Samsung Galaxy S6(5.1 inches), S6 Edge(5.1 inches), S6 Edge+(5.7 inches)
 One of the main characteristics of smartphones is their screen. It usually fills most of the phone'​s front surface (about 70%); screen size usually defines the size of a smartphone. Many have an aspect ratio of 16:9; some are 4:3 or other ratios. One of the main characteristics of smartphones is their screen. It usually fills most of the phone'​s front surface (about 70%); screen size usually defines the size of a smartphone. Many have an aspect ratio of 16:9; some are 4:3 or other ratios.
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 An upcoming development is a Braille screen, using microfluidics technology.[117] An upcoming development is a Braille screen, using microfluidics technology.[117]
  
-Market share[edit] +====Market share==== 
-Smartphone usage[edit]+===Smartphone usage===
 In the third quarter of 2012, one billion smartphones were in use worldwide.[118] Global smartphone sales surpassed the sales figures for feature phones in early 2013.[5] As of 2013, 65 percent of U.S. mobile consumers own smartphones.[119] The European mobile device market as of 2013 is 860 million.[120] In China, smartphones represented more than half of all handset shipments in the second quarter of 2012[121] and in 2014 there were 519.7 million smartphone users, with the number estimated to grow to 700 million by 2018.[122] In the third quarter of 2012, one billion smartphones were in use worldwide.[118] Global smartphone sales surpassed the sales figures for feature phones in early 2013.[5] As of 2013, 65 percent of U.S. mobile consumers own smartphones.[119] The European mobile device market as of 2013 is 860 million.[120] In China, smartphones represented more than half of all handset shipments in the second quarter of 2012[121] and in 2014 there were 519.7 million smartphone users, with the number estimated to grow to 700 million by 2018.[122]
  
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 Worldwide shipments of smartphones topped 1 billion units in 2013, up 38% from 2012's 725 million, while comprising a 55% share of the mobile phone market in 2013, up from 42% in 2012.[126] Worldwide shipments of smartphones topped 1 billion units in 2013, up 38% from 2012's 725 million, while comprising a 55% share of the mobile phone market in 2013, up from 42% in 2012.[126]
  
-Since 1996 smartphone shipments have had positive growth, but in Q1 2016 for the first time the shipments dropped by 3 percent year on year. The situation was caused by mature China market.[127] +Since 1996 smartphone shipments have had positive growth, but in Q1 2016 for the first time the shipments dropped by 3 percent year on year. The situation was caused by mature China market.
- +
-By manufacturer[edit]+
  
 +====By manufacturer====
 The LG G2, OnePlus One, Samsung Galaxy Note 4, and iPhone 6 Plus. The LG G2, OnePlus One, Samsung Galaxy Note 4, and iPhone 6 Plus.
 Worldwide Smartphones Vendors Market Share Worldwide Smartphones Vendors Market Share
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 In Q1 2015 in the US, Android market share was 53.2%; Apple'​s iPhone had a 41.3% share and Samsung'​s Android smartphones had 29.3%.[133] In Q1 2015 in the US, Android market share was 53.2%; Apple'​s iPhone had a 41.3% share and Samsung'​s Android smartphones had 29.3%.[133]
  
-By operating system[edit] +====By operating system==== 
-Main article: Mobile operating system +The market has been dominated by the Android operating system since 2010. Android'​s market share (measured by units shipment) rose from 33.2% in Q4 2011 to 78.1% of the market in Q4 2013. Apple'​s market share oscillated between 15% to 20.9% during the same period. BlackBerry'​s market share fell from 14.3% in Q4 2011 to 0.6% in Q4 2013. Windows Mobile market share rose from 1.5% to 3% during the same time frame.
-The market has been dominated by the Android operating system since 2010. Android'​s market share (measured by units shipment) rose from 33.2% in Q4 2011 to 78.1% of the market in Q4 2013. Apple'​s market share oscillated between 15% to 20.9% during the same period. BlackBerry'​s market share fell from 14.3% in Q4 2011 to 0.6% in Q4 2013. Windows Mobile market share rose from 1.5% to 3% during the same time frame.[134]+
  
-As of the end of Q3 2014, Android was the most popular operating system, with a 84.4% market share, followed by iOS with 11.7%, Windows Phone with 2.9%, BlackBerry with 0.5% and all others with 0.6%.[135]+As of the end of Q3 2014, Android was the most popular operating system, with a 84.4% market share, followed by iOS with 11.7%, Windows Phone with 2.9%, BlackBerry with 0.5% and all others with 0.6%.
  
 Worldwide Smartphones Operating System Market Share Worldwide Smartphones Operating System Market Share
 Source Date Android iOS Windows BlackBerry OS Others Reference Source Date Android iOS Windows BlackBerry OS Others Reference
 Gartner Q1 2016 84.1% 14.8% 0.7% 0.2% 0.2% [128] Gartner Q1 2016 84.1% 14.8% 0.7% 0.2% 0.2% [128]
-Issues[edit]+ 
 +====Issues====
 Smartphones have presented issues similar to those affecting other mobile telephones. As well, there are some issues which are unique to smartphones. Smartphones have presented issues similar to those affecting other mobile telephones. As well, there are some issues which are unique to smartphones.
- +===Battery life===
-Battery life[edit] +
 A high-capacity portable battery charger. A high-capacity portable battery charger.
-Compared to earlier non-smartphones,​ smartphone battery life has generally been poor and a significant drain on customer satisfaction.[136][137][138] There is also a trend to batteries that the user cannot replace.[139]+Compared to earlier non-smartphones,​ smartphone battery life has generally been poor and a significant drain on customer satisfaction.[136][137][138] There is also a trend to batteries that the user cannot replace.
  
-Social[edit] +===Social===
-Main article: Mobile phone overuse+
 A 2012 University of Southern California study found that unprotected adolescent sexual activity was more common among owners of smartphones.[140] A study conducted by the Rensselaer Polytechnic Institute'​s (RPI) Lighting Research Center (LRC) concluded that smartphones,​ or any backlit devices, can seriously affect sleep cycles.[141] Some persons might become psychologically attached to cellphones resulting in anxiety when separated from the devices.[142] A 2012 University of Southern California study found that unprotected adolescent sexual activity was more common among owners of smartphones.[140] A study conducted by the Rensselaer Polytechnic Institute'​s (RPI) Lighting Research Center (LRC) concluded that smartphones,​ or any backlit devices, can seriously affect sleep cycles.[141] Some persons might become psychologically attached to cellphones resulting in anxiety when separated from the devices.[142]
  
 A "​smombie"​ (a combination of "​smartphone"​ and "​zombie"​) is a walking person using a smartphone and not paying attention as they walk, possibly risking an accident in the process, an increasing social phenomenon.[143] The issue of slow-moving smartphone users led to the temporary creation of a "​mobile lane" for walking in Chongqing, China.[144] The issue of distracted smartphone users led the city of Augsburg, Germany to embed pedestrian traffic lights in the pavement.[145] A "​smombie"​ (a combination of "​smartphone"​ and "​zombie"​) is a walking person using a smartphone and not paying attention as they walk, possibly risking an accident in the process, an increasing social phenomenon.[143] The issue of slow-moving smartphone users led to the temporary creation of a "​mobile lane" for walking in Chongqing, China.[144] The issue of distracted smartphone users led the city of Augsburg, Germany to embed pedestrian traffic lights in the pavement.[145]
  
-While driving[edit] +===While driving===
-Main article: Mobile phones and driving safety +
-Main article: Texting while driving +
 A New York driver using two hand held mobile phones at once. A New York driver using two hand held mobile phones at once.
 Mobile phone use while driving, including talking on the phone, texting, or operating other phone features, is common but controversial. It is widely considered dangerous due to distracted driving. Being distracted while operating a motor vehicle has been shown to increase the risk of accidents. In September 2010, the US National Highway Traffic Safety Administration (NHTSA) reported that 995 people were killed by drivers distracted by cell phones. In March 2011 a US insurance company, State Farm Insurance, announced the results of a study which showed 19% of drivers surveyed accessed the Internet on a smart phone while driving.[146]Many jurisdictions prohibit the use of mobile phones while driving. In Egypt, Israel, Japan, Portugal and Singapore, both handheld and hands-free use of a mobile phone (which uses a speakerphone) is banned. In other countries including the UK and France and in many U.S. states, only handheld phone use is banned, while hands-free use is permitted. Mobile phone use while driving, including talking on the phone, texting, or operating other phone features, is common but controversial. It is widely considered dangerous due to distracted driving. Being distracted while operating a motor vehicle has been shown to increase the risk of accidents. In September 2010, the US National Highway Traffic Safety Administration (NHTSA) reported that 995 people were killed by drivers distracted by cell phones. In March 2011 a US insurance company, State Farm Insurance, announced the results of a study which showed 19% of drivers surveyed accessed the Internet on a smart phone while driving.[146]Many jurisdictions prohibit the use of mobile phones while driving. In Egypt, Israel, Japan, Portugal and Singapore, both handheld and hands-free use of a mobile phone (which uses a speakerphone) is banned. In other countries including the UK and France and in many U.S. states, only handheld phone use is banned, while hands-free use is permitted.
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 Due to the increasing complexity of smartphones,​ this has introduced additional difficulties for law enforcement officials when attempting to distinguish one usage from another in drivers using their devices. This is more apparent in countries which ban both handheld and hands-free usage, rather than those which ban handheld use only, as officials cannot easily tell which function of the mobile phone is being used simply by looking at the driver. This can lead to drivers being stopped for using their device illegally for a phone call when, in fact, they were using the device legally, for example, when using the phone'​s incorporated controls for car stereo, GPS or satnav. Due to the increasing complexity of smartphones,​ this has introduced additional difficulties for law enforcement officials when attempting to distinguish one usage from another in drivers using their devices. This is more apparent in countries which ban both handheld and hands-free usage, rather than those which ban handheld use only, as officials cannot easily tell which function of the mobile phone is being used simply by looking at the driver. This can lead to drivers being stopped for using their device illegally for a phone call when, in fact, they were using the device legally, for example, when using the phone'​s incorporated controls for car stereo, GPS or satnav.
- 
  
 A sign along Bellaire Boulevard in Southside Place, Texas (Greater Houston) states that using mobile phones while driving is prohibited from 7:30 am to 9:30 am and from 2:00 pm to 4:15 pm A sign along Bellaire Boulevard in Southside Place, Texas (Greater Houston) states that using mobile phones while driving is prohibited from 7:30 am to 9:30 am and from 2:00 pm to 4:15 pm
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 Public Health Law Research maintains a list of distracted driving laws in the United States. This database of laws provides a comprehensive view of the provisions of laws that restrict the use of mobile communication devices while driving for all 50 states and the District of Columbia between 1992, when first law was passed, through December 1, 2010. The dataset contains information on 22 dichotomous,​ continuous or categorical variables including, for example, activities regulated (e.g., texting versus talking, hands-free versus handheld), targeted populations,​ and exemptions.[156] Public Health Law Research maintains a list of distracted driving laws in the United States. This database of laws provides a comprehensive view of the provisions of laws that restrict the use of mobile communication devices while driving for all 50 states and the District of Columbia between 1992, when first law was passed, through December 1, 2010. The dataset contains information on 22 dichotomous,​ continuous or categorical variables including, for example, activities regulated (e.g., texting versus talking, hands-free versus handheld), targeted populations,​ and exemptions.[156]
  
-Legal[edit] +===Legal===
-Main article: Smartphone wars+
 A "​patent war" between Samsung and Apple started when the latter claimed that the original Galaxy S Android phone copied the interface‍—‌and possibly the hardware‍—‌of Apple'​s iOS for the iPhone 3GS. A "​patent war" between Samsung and Apple started when the latter claimed that the original Galaxy S Android phone copied the interface‍—‌and possibly the hardware‍—‌of Apple'​s iOS for the iPhone 3GS.
  
-Medical[edit] +===Medical====
-Main article: Mobile app+
 With the rise in number of mobile medical apps in the market place, government regulatory agencies raised concerns on the safety of the use of such applications. These concerns were transformed into regulation initiatives worldwide with the aim of safeguarding users from untrusted medical advice.[157] With the rise in number of mobile medical apps in the market place, government regulatory agencies raised concerns on the safety of the use of such applications. These concerns were transformed into regulation initiatives worldwide with the aim of safeguarding users from untrusted medical advice.[157]
  
-Security[edit]+===Security===
 Main articles: Mobile security, Malware, Mobile virus and Media Transfer Protocol Main articles: Mobile security, Malware, Mobile virus and Media Transfer Protocol
 Smartphone malware is easily distributed through an insecure app store.[158][159] Often malware is hidden in pirated versions of legitimate apps, which are then distributed through third-party app stores.[160][161] Malware risk also comes from what's known as an "​update attack",​ where a legitimate application is later changed to include a malware component, which users then install when they are notified that the app has been updated.[162] Smartphone malware is easily distributed through an insecure app store.[158][159] Often malware is hidden in pirated versions of legitimate apps, which are then distributed through third-party app stores.[160][161] Malware risk also comes from what's known as an "​update attack",​ where a legitimate application is later changed to include a malware component, which users then install when they are notified that the app has been updated.[162]
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 One out of three robberies in 2012 in the United States involved the theft of a mobile phone. An online petition has urged smartphone makers to install kill switches in their devices.[163] In 2014, Apple'​s "Find my iPhone"​ and Google'​s "​Android Device Manager"​ can disable phones that have been lost/​stolen. With BlackBerry Protect in OS version 10.3.2, devices can be rendered unrecoverable to even BlackBerry'​s own Operating System recovery tools if incorrectly authenticated or dissociated from their account.[164] One out of three robberies in 2012 in the United States involved the theft of a mobile phone. An online petition has urged smartphone makers to install kill switches in their devices.[163] In 2014, Apple'​s "Find my iPhone"​ and Google'​s "​Android Device Manager"​ can disable phones that have been lost/​stolen. With BlackBerry Protect in OS version 10.3.2, devices can be rendered unrecoverable to even BlackBerry'​s own Operating System recovery tools if incorrectly authenticated or dissociated from their account.[164]
  
-Sleep[edit] +===Sleep===
-Main article: Electronic media and sleep+
 Using smartphones late at night can disturb sleep, due to the brightly lit screen affecting melatonin levels and sleep cycles. In an effort to alleviate these issues, several apps that change the color temperature of a screen to a warmer hue based on the time of day to reduce the amount of blue light generated have been developed for Android, while iOS 9.3 integrated similar, system-level functionality known as "Night Shift"​. It has also been theorized that for some users, addicted use of their phones, especially before they go to bed, can result in "ego depletion"​.[165][166][167][168][169] Using smartphones late at night can disturb sleep, due to the brightly lit screen affecting melatonin levels and sleep cycles. In an effort to alleviate these issues, several apps that change the color temperature of a screen to a warmer hue based on the time of day to reduce the amount of blue light generated have been developed for Android, while iOS 9.3 integrated similar, system-level functionality known as "Night Shift"​. It has also been theorized that for some users, addicted use of their phones, especially before they go to bed, can result in "ego depletion"​.[165][166][167][168][169]
  
-Other terms[edit]+====Other terms====
 "​Phablet",​ a portmanteau of the words phone and tablet, describes smartphones with larger screens.[170][171] "​Phablet",​ a portmanteau of the words phone and tablet, describes smartphones with larger screens.[170][171]