How to restore the factory system of vivo x9 mobile phone?

First click the application, then click Settings, find the privacy option, click Enter, click Reset Factory Data, and then click Reset Phone.

1, factory settings: restore the personality settings of the equipment or instrument to the factory default state, such as startup interface, standby mode, operation shortcut keys, regular reminders, etc. Restore to factory settings without deleting the stored data.

2. Mobile phone: ringtone, theme, scene mode, alarm clock and font settings are restored to factory status. The contents in the memory card (such as downloaded application) or SIM card (such as SMS) will not be deleted.

3, ultra-clear box: when the box is powered on (the first three seconds), please keep pressing the left button of the remote control; Use the remote control to adjust to the penultimate item, and click OK when you see reset confirming the factory settings; Next, choose the fourth item from the bottom, that is, there is; Next, wait for the factory settings to be restored, and finally select the first item to restart in the initial interface!