After the vivo mobile phone turns on ADB mode, an engineering mode appears on the main screen of the mobile phone. How to turn it off?

You can refer to the processing method of desktop engineering mode:

1. Press and hold the "Project Mode" icon on the desktop for 3 seconds to close;

2. Try to restart the device forcibly.

① ① models of funtouch OS 3.2 and subsequent systems: press and hold the "power button" and "volume down button" at the same time 10 second or more;

② Press and hold the top round key 10 second or more to forcibly restart the mobile phone (NEX 3/NEX 3S is applicable);

③ System model before ③Funtouch OS 3.2: Press and hold the "power button" for more than 12 seconds.

3. Connect the power supply, enter the recovery mode-install the system software-confirm the latest version of the network update-download and install the latest version, connect with available WiFi-download and install-wait for the installation to be completed, and then restart;

4. After the important data is backed up, enter Settings-System Management/More Settings-Backup and Reset-Clear all data.

Note: Clearing all data will delete all data stored internally (except SD card data), including installed applications, contacts, short messages, files, etc. This recovery can be used when there is a serious abnormality and there is no other way to solve it. Please use it with caution.

Important data is backed up by cloud services before operation.

Enter the mobile cloud service-device cloud backup-backup data type-turn on the switch that needs to be backed up-return to the previous page-click Back Up Now;

If you still can't quit after the above operation, please go to vivo customer service center for processing.

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 and whether the spare parts inventory is sufficient.