My Tab SM-T380 no longer accepts my PIN Set a PIN to unlock my Tab before using. Worked fine for a long time. Today when I enter the PIN it loops back to the enter PIN screen over and over. Tried to reboot but the restart/power off screen loops me back to the enter PIN screen. Tried hard reboot: vol up/power down/home screen. No affect.
This happened to me too. I knew the pin was correct as if I deliberately entered an incorrect pin it came up with the message saying it was incorrect. I tried the reboot too but it doesn't work as the "loop" won't let you turn it off. So I let the battery run down completely (which took a week as it is obviously using very little power; then I found you can have the torch on and that helped the drain). Then once completely dead, plugged in the charger and lo and behold back to normal!