Wearable smartphone

The invention relates to the field of communication technology and equipment, specifically to a wearable smartphone. The smartphone includes essential accessories for realizing various functions of the smartphone, a wrist band and a display screen. The display screen consists of a main screen and more than two variable extension screens, and the accessories and the main screen are jointly packagedin a shell under the main screen. By use of the technical scheme disclosed by the invention, before the variable extension screen of the smartphone is extended, the main screen of the smartphone displays common watch and phone display content and functions such as time, phone answering and hanging-up, and/or dialing number keys, and of course, it is also allowed that these common content and functions are not displayed, or part of the content and functions are displayed selectively. When the variable extension screen of the smartphone is extended, a big screen of the smartphone can be formed,thereby completing all fu