Smart phones are mobile personal computers with advanced mobile operating systems and functions that can be used for mobile or handheld use. Smartphones are usually small (much larger than tablets) that can send and receive voice / video calls and create and receive text messages, and have personal digital assistants (such as Siri, Google assistant, Alexa or Cortana), event calendars, media players, video games, GPS navigation, digital cameras and digital cameras. Smartphones can access the Internet through cellular networks 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 usually have a color display with a graphical user interface that covers more than 76% of the front surface. The display is almost always a touch screen, sometimes with a touch keyboard, such as priv / Passport blackberry, which enables users to use the virtual keyboard to type words and numbers and press the icon on the screen to activate the "application" function.

In 1999, NTT DoCoMo company of Japan released the first smart phone to achieve large-scale adoption in a country. Smartphones became popular in the late 2000s. Most of the products produced since 2012 have high-speed mobile broadband 4G LTE, motion sensor and mobile payment functions. In the third quarter of 2012, 1 billion smartphones were used worldwide. At the beginning of 2013, the global sales of smart phones exceeded that of conventional phones.

In this gallery, you can download free pictures: pictures of smart phones