Enter Recovery Mode.
To access the recovery mode on a , follow these steps: : Turn off your tablet completely. Connect to Power : Connect your via a USB cable. Key Combination : Once the battery sign appears, press and hold the buttons simultaneously until the device vibrates. Logo Screen : When the Nokia logo appears, release the button but continue holding until the "No Command" Android robot screen appears. Access Menu
Once inside, the touchscreen will not function. Use these physical controls:
: Press and hold the Power button and Volume Up button simultaneously.
If the hardware keys are not working, you can use these alternatives: How To Enter Recovery Mode On Android
and fail to account for the T21's specific software locks. If you are stuck at a "No Command" robot, you can try holding and tapping once, but success is inconsistent on this tablet. How to Hard Reset T Tablet via Recovery Mode
Ensure you are holding Power first , then tapping Volume Up. Do not hold both at the same time for too long.