What should I do if the phone flashes half a screen when the weather is cold?

It may be because of the cold weather that the power supply is insufficient. Now you can try it in a warm environment. If it is serious, you need to go to the mobile phone shop for repair.

1. Insufficient battery power supply: the internal current and voltage are weak, which leads to the unstable power supply voltage to the screen, resulting in the flashing of the black screen. It may also be caused by poor contact between the battery and the copper plate. When using a mobile phone, a slightly larger movement will lead to a black screen.

2. It may be the fault of the mobile phone screen caused by the cold weather: when there is a problem with the mobile phone screen, the internal electronic components are dysfunctional or do not appear, which leads to the phenomenon of flickering and black screen on the mobile phone screen from time to time.