How To Open Recovery Mode On Nokia T21 [new] Access
If the screen shows "No command" (an Android robot lying down), hold down the Power Button and click the Volume Up Button once, then release both. You are now in the Android System Recovery mode. How to Navigate Recovery Mode
Press and hold the and the Power button at the exact same time. Keep holding both buttons down firmly. How to Open Recovery Mode on NOKIA T21
Press and hold the button.
Manually apply OTA (Over-The-Air) update files directly from an external SD card or a computer via ADB. Critical Step: Prepare Your Device If the screen shows "No command" (an Android