A smartphone is a mobile personal computer with a mobile operating system with features useful for mobile or handheld use.[1][2][3] Smartphones, which are typically pocket-sized (as opposed to tablets, which are much larger in measurement), have the ability to place and receive voice/video calls and create and receive text messages, have personal digital assistants (such as Siri, Google Assistant, Alexa, Cortana, or Bixby), an event calendar, a media player, video games, GPS navigation, digital camera and digital video camera. Smartphones can access the Internetthrough cellular frequencies or Wi-Fi and can run a variety of third-party software components ("apps" from places like Google Play Store or Apple App Store). They typically have a color display with a graphical user interface that covers more than 76% of the front surface. The display is almost always a touchscreen and sometimes additionally a touch-enabled keyboard like the Priv/Passport BlackBerrys, which enables the user to use a virtual keyboard to type words and numbers and press onscreen icons to activate "app" features.
In 1999, the Japanese firm NTT DoCoMo released the first smartphones to achieve mass adoption within a country.[4]Smartphones became widespread in the late 2000s. Most of those produced from 2012 onward 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.[5] Global smartphone sales surpassed the sales figures for feature phones in early 2013
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