: Press and hold the Power button and Volume Up button simultaneously.
Check if your tablet case is interfering with the buttons, preventing a clean "press and hold" action. How to Open Recovery Mode on NOKIA T21
If you intend to use Recovery Mode for a "Wipe Data/Factory Reset," all files, photos, and apps will be permanently deleted. : Press and hold the Power button and
To leave Recovery Mode without making changes: " all files
: After a brief moment, the tablet should display the Recovery Mode menu . This is a text-based interface where the touchscreen does not function. From here, use the Volume Up/Down buttons to navigate through the options and the Power button to confirm your selection.