Why is the full screen of mobile phone gray?

If there are abnormal screen colors such as flower screen, green screen and incorrect screen color, I suggest you:

1. Turn off the phone and restart it.

2. If the mobile phone can be used normally, please check whether the theme software is used. It is recommended to restore the theme of the mobile phone as much as possible.

3. If not, please back up the data (contacts, information, pictures, etc. ) and try to restore the phone to the factory settings.

4. If the above operation is invalid, or the mobile phone can't continue to operate after the screen display appears, please bring the purchase invoice, maintenance card and machine to the local Samsung after-sales service center for testing.