How do I know if someone has physically accessed my phone?

Hamano@lemm.ee to Technology@lemmy.world – 40 points –

Hello ! I hope I'm at the good place. A friend of mine asked me :

How do I know if someone has physically accessed my phone? Knowing that this person knows my unlock code. Also, how do I know I'm not being spied on remotely?

I didn't have the answer and thought I might as well ask there. Thank you.

EDIT : His phone is a Samsung Z Fold 3 is that can help !

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Check for apps that are running in the background after you have closed everything.

From what I understood, it didn't just happened. A certain person knows things about him that he never told, or something like that.

Thanks for the suggestion, though. That's a nice idea.

It could be semi-public details. A google search and someone’s social media can give you a lot of information on a person, depending on how safe their internet practices are. Generally all you need are two or three details to find out more personal information if you wanted to.