To enter the Recovery menu:
While still holding , press and hold the Power button .
To successfully boot the Nokia T21 into Recovery Mode, specific hardware button combinations must be utilized while the device is powered down. The process begins by ensuring the tablet has sufficient battery life—ideally above 50 percent—to prevent the device from losing power during critical system operations. To start, press and hold the Power button and select "Power Off" from the on-screen menu, waiting a few seconds for the device to shut down completely. Once the tablet is dark and inactive, press and hold the Volume Down button and the Power button simultaneously. Continue holding this combination until the Nokia logo appears on the screen or the device vibrates, at which point you should release the Power button while continuing to hold the Volume Down key. Shortly after, the screen will display the Fastboot Mode or directly transition to a fallen Android robot mascot with the text "No command."
Once inside, the following functions are available:
: Because standard recovery is blocked, users are often forced to use Fastboot Mode (Power + Volume Down while connected to a PC) or the Nokia T21 Settings Menu for factory resets. Why Users Look for It Forgot Screen Lock