How to protect phone if snatched from hand unlocked or compromised passcode

So recently someone I know got mugged and he gave them his passcode. I know everyone says to never do that but when getting threatened who knows how you will behave. Also people can just snatch phones from your hand while unlocked

I have a Samsung phone. What security measures should I take? Just some queries I had already.

* I have a Samsung account. Using this I can track the phone and brick it etc. It seems though if …

can compromised passcode people phone phones privacy protect samsung snatch unlocked