Clears temporary system files without losing personal data. (Note: This option may be hidden on certain Android versions utilizing seamless dynamic partitions).
Installing official software updates directly from an SD card or computer via ADB. Fixing a tablet trapped in a continuous boot loop. Method 1: The Hardware Button Combination (Recommended) How to Open Recovery Mode on NOKIA T21
Clears all user data (factory reset). Wipe Cache Partition: Clears temporary system files. How to Perform a Hard Reset in Recovery Mode If you need to factory reset your Navigate to Wipe Data/Factory Reset using the volume keys. Press the Power Button to select 0.5.1. Select Factory Data Reset to confirm 0.5.1. Once completed, select Reboot System Now . Troubleshooting: "No Command" Screen Clears temporary system files without losing personal data
This is the standard method to enter Recovery Mode on almost all Nokia Android devices, including the T21. Fixing a tablet trapped in a continuous boot loop