Why does a white stripe suddenly appear on the screen of my Huawei mobile phone?

The following actions are recommended:

1. Turn the machine on and off again.

2. Switch to a different interface and see if this happens in the same place. Initially eliminate the background problem of the model.

3. Try to restore the factory settings.

If the problem still exists, you need to actually test the physical machine. It is recommended to send the mobile phone to the nearest Samsung service center for testing, and the service center will determine the specific problems and accessories of the mobile phone according to the test results.