Samsung Galaxy A21 System Mode 2 (Green recovery mode selection User Interface Mode)
This is a video demonstrating a Samsung Galaxy A21 Running in System Mode 2 aka User Interface Mode enabled via recovery. This mode is not usually accessable for the fact System Mode 2 allows additional features that not usually accessed by the end-user. The features include allowing root and enabled setting used by the manufacturer.
How to enable:
Shut Down Samsung Galaxy Completely
Hold Volume Up+Power Button to enter recovery mode
If first time in recovery selection does not turn green, scroll down with Vol- and select run graphics test after tapping the bottom android recovery at top of list highlighted in yellow (eg. there are 2 android recovery info's, tap the bottom info)
select run graphics test
your device will refresh, if the first selection shows green instead of the usual blue selector DO NOT PRESS vol up or down if the blue selection turn to green on reboot device now select and your in mode 2
Song
Datsik-Vanish