Volume Up button first (don’t release).
To open on a Go to product viewer dialog for this item. How to Open Recovery Mode on NOKIA T21
Keep holding both buttons until the Nokia logo appears, then release them. You should see a screen that says "No Command" with an image of a fallen Android robot. 5. Trigger the Recovery Menu To bypass the "No Command" screen: Press and hold the Power button While holding Power, tap the button once. Release both buttons immediately. 6. Navigate the Menu You are now in Android Recovery Mode Volume buttons to scroll up and down. Power button Volume Up button first (don’t release)
: Deletes temporary system files without losing data. You should see a screen that says "No
This is the standard method to enter Recovery Mode on almost all Nokia Android devices, including the T21.