Go back to the main Settings menu, navigate to , and toggle on USB Debugging . Step 2: Connect to a Computer
You are preparing to sell your device and need to factory reset it.
The Nokia T21 requires a precise hardware button combination to trigger the recovery menu. Follow these steps carefully: Step 1: Turn Off the Tablet How to Open Recovery Mode on NOKIA T21
While holding the Power button, quickly tap the button once. Release both buttons immediately.
Getting out of these modes is easy:
is powered off. If it is frozen, hold the power button for about 10-15 seconds until the screen goes black 0.5.2.
If you have a computer with ADB installed, you can use it to open Recovery Mode on your NOKIA T21. Here's how: Go back to the main Settings menu, navigate
: When the Nokia logo appears, release the Power button but continue holding Volume Up0;b2e; until the "No command" screen (a dead Android robot) shows up.