What if Huawei's mobile phone headline recommendation hot list has no color?

1. Check whether the sleep time/stop time function for healthy use of mobile phone is turned on: Settings > Healthy use of mobile phone > Sleep time/stop time. When this setting is turned on, the screen color will change when the phone reaches the set time.

2. Check whether the e-book mode is turned on: enter the settings, search and click the e-book mode, and turn off the e-book mode (if it is not found, it means that the mobile phone does not support this function, so check other scenarios).

3. Check whether the color correction switch is turned on: Go to Settings, search and click Color Correction. If the switch is on, just turn it off.