Once inside, the touchscreen will not function. Use these physical controls:
: To enter the actual Recovery menu from the "No Command" screen: Hold the Power button. Press the Volume Up button once, then release both. Method 2: Using ADB (Command Line) How to Open Recovery Mode on NOKIA T21
: Type the following command and hit Enter: adb reboot recovery . The tablet will restart directly into Recovery Mode. Navigating the Recovery Menu Once inside, the touchscreen will not function
: Go to Settings > About Tablet and tap Build Number 7 times. Then, in System > Developer Options , enable USB Debugging . in System > Developer Options
: Press Volume Up or Volume Down to scroll through options.