Scene 1:
The system application background shows black: the dark mode function is turned on. Closing method: go to Settings > Display and Brightness >; Dark mode, turn off the dark mode switch.
The background of the three-party application shows black: the dark mode of the application itself is turned on. I suggest you go to Application > My > Settings > Turn off the dark mode switch.
Scenario 2:
Open the simulated color space. Close method: Enter the settings, search the simulated color space, and select Close. (If the Analog Color Space option is not found, you have not turned on this switch. Please skip this troubleshooting. )
When the e-book mode is turned on, the screen will turn black and white. Closing method: enter the settings, search and click the e-book mode, and close the e-book mode.
Scenario 3:
The color inversion function is turned on. Turn off method: Go to Settings, search, and click Color Inversion to turn off this switch.
Still can't solve?
If the above troubleshooting can't solve the problem, you can try to restore all the settings of your phone.
If the problem persists, it may be the screen itself. Please back up important data in advance (third-party applications such as WeChat and QQ need to be backed up separately), and bring the purchase voucher to Huawei Customer Service Center for testing and processing. We will serve you wholeheartedly and wish you a happy life!
Huawei Customer Service Center Appointment Service
Huawei Customer Service Center Appointment Service