Smart phones

A smartphone (also known as a cellphone or a mobile) is a mobile personal computer with an advanced mobile operating system with features useful for mobile or handheld use. 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, or Cortana), an event calendar, a media player, video games, GPS navigation, digital camera and digital video camera. Smartphones can access the Internet through cellular or Wi-Fi (if compatible), 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. Smartphones typically have a home button, which is almost always located below the touchscreen. In some cases, smartphones may have a fingerprint sensor, which is a device that scans the human finger, used as a way of identification. It is built-in within the home button. Smartphones also may typically have a built-in flashlight, usually located right below the rear-facing camera.

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