What I have just found is a major, major security flaw in Samsung phones. For example, if my phone is locked, and I want to turn on the airplane mode without entering my password or my fingerprint. What I will do is, I will just press and hold the volume down button and the power button until the phone force restarts. And when the phone is restarting, (we can confirm it by seeing the Samsung logo) We will keep pressing the volume down button. And in this way, the phone will boot in the safe mode, which automatically enables the airplane mode with the safe mode. And for this method, you don't even need to enter your password or enter your fingerprint.
