Abstract: This application provides an ambient light calibration method and an apparatus, applied to the field of communication technologies, to resolve poor user experience caused by screen dimming effect incapable of matching a current environment. The method includes: obtaining location information of an ambient light sensor; obtaining first ambient light data detected by the ambient light sensor; determining an image matting region based on the location information of the ambient light sensor; performing image matting on layers of a displayed image frame of the terminal device based on the image matting region to obtain matted images corresponding to the layers, and compositing the matted images corresponding to the layers to obtain a screenshot image; and calibrating the first ambient light data based on the screenshot image and screen brightness of the terminal device, to obtain second ambient light data. This application is applied to an ambient light calibration process.

Abstract: Example screen-on control methods and apparatus are described. In one example method, after a user performs a screen-on operation on the electronic device, a first processor draws a screen-on interface in response to the screen-on operation. A second processor performs a screen initialization operation in parallel when the first processor draws the screen-on interface. After determining that the second processor completes the screen initialization operation, the first processor sends the screen-on interface to a display for display.