What if the mobile phone has a black screen but can be used normally?

If a black screen appears when using a vivo phone, you can refer to the following methods:

First, try to restart the phone forcibly, observe whether it can be used again, and check whether the power button and volume button are stuck by the protective case;

Forced restart method:

20/KLOC-models launched before September, 2007 (models before X20): Press and hold the "power button" 12 seconds or more.

20/KLOC-models and new models (X20 and later models) launched after September 0/7: Press and hold the "power button"+"volume down button" 10 second at the same time.

NEX 3/NEX 3S: Long press the top wheel key 10 seconds or more;

2. If it appears again after restart and recovery, please check it according to the following methods:

1, which can be set on mobile phone-My device-iQOO Funtouch.

? OS/monster/UI (some models are under setup-system upgrade) interface to check whether it is the latest version. If a new version of the push notification is detected, it is recommended to update it to the latest version in time.

2. Enter Settings-More Settings/System Management-Restore Factory Settings/Backup Reset-Try to restore all settings (it is recommended to back up important data such as contacts, information and pictures in the mobile phone first, cancel the account of vivo and third-party software, and programs such as WeChat may need to log in again);

Three. If the restart cannot be resumed or the above-mentioned operation is still unresolved, it is recommended to take the mobile phone to the official customer service center of vivo for testing and viewing. The address and contact information of the service center can be found in official website-the outlets serving vivo-click to view all-select your province and city-check the local customer service center, or enter this link for inquiry. ? Note: In order to save valuable time, it is recommended that you call the service center in advance to confirm the business hours of the service center.