While still holding , press and hold the Power button .
: Plug your tablet into a computer or a charger using a USB cable. Wait for the charging animation or battery sign to appear on the screen. How to Open Recovery Mode on NOKIA T21
18;write_to_target_document1a;_joPsaaf-OZmfptQPv8vGkQE_20;56; 0;10c2;0;7ca; While still holding , press and hold the Power button
: Press and hold Power + Volume Down simultaneously. While still holding
Enter the bootloader menu (Fastboot).