Owner/user/guest account breach

[Jeffy980]

Somebody somehow remotely signed in and took over as the "owner" (admin) of my Huawei phone (showing as their mobile number). I couldn't delete them or swap it back so I did a factory reset (and changed all passwords) which got rid of them.

My question is what could they do? Just add users or access files? My private photos, videos etc?

A new owner account would have to start from scratch on a new set up no? My phone was still the same with the same access for me and all my content on it still...just someone else's number saying it was the owner!

I've taken other action but I just want to know what someone else could access with that privilege?

 

[B. Diddy]

Welcome to Android Central! Do you mean that someone took over your phone number? If so, speak to your carrier about that -- it may have been a SIM swap attack: https://www.androidpolice.com/how-to-protect-yourself-from-a-sim-swap-attack/