Hard Reset VIVO Y91

How to factory reset VIVO Y91? How to wipe all data in VIVO Y91? How to bypass screen lock in VIVO Y91? How to restore defaults in VIVO Y91?

The following tutorial shows all method of master reset VIVO Y91. Check out how to accomplish hard reset by hardware keys and Android 8.1 Oreo settings. As a result your VIVO Y91 will be as new and your Qualcomm Snapdragon 439 core will run faster.

First method:

At first switch off the mobile by pressing the Power button for a short while.
Then hold down Volume Down and Power keys for a few moments.
Release all buttons when you see information about Fastboot Mode.
Now choose "Recovery". Use Volume Down to navigate and the Power button to confirm that.
After that select "Wipe data" with the Power key.
In this menu go to "OK" --> "Back" and confirm it with the Power button.
At the end select "Reboot system" by using the Power key.
Well done! All your data will be removed from your device.