Factory reset samsung galaxy m20, how to hardreset. info. Usually, recovery mode is usable when you forget pattern lock or screen lock, the phone stuck in boot logo or restarts itself constantly. factory reset protection ( . Ensure your galaxy device has a sufficient amount of battery power, if you try to reboot your phone with a critical amount of charge it may not turn on after the reboot. 1 hold down the volume down key and the power button simultaneously for 7 seconds. 2 your device will restart and display the samsung logo. See how to reset samsung m20 phone more videos for how to reset samsung m20 phone. Soft reset samsung galaxy m20 mobile select settings from menu tap on more settings tap on backup and reset. then select to erase all data and reset phone. check reset phone only if you want to delete all the data on the phone finally, choose erase everything. it will do soft reset your samsung. 10 feb 2019 watch it now and try in your phone to do a hard reset if pattern unlo...