How to factory reset VIVO X21UD? How to wipe all data in VIVO X21UD? How to bypass screen lock in VIVO X21UD? How to restore defaults in VIVO X21UD?
The following tutorial shows all method of master reset VIVO X21UD. Check out how to accomplish hard reset by hardware keys and Android 8.1 Oreo settings. As a result your VIVO X21UD will be as new and your Qualcomm Snapdragon 660 MSM8976 Plus core will run faster.
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