Saved accounts and password that doesn't belong to me

[nPing]

Hi.
Last night I logged out of all my accounts to do some check and cleaning.
When I tap to login on Google, someone's saved Google accounts and passwords showed up.
I've also notice my phone been having sound playing on its own when I'm not using, like someone is watching YouTube and it only stop when I restart my phone.
I never let anyone used my phone since I bought it.
Did someone has hacked my phone?

 

[mikedt]

Hi.
Last night I logged out of all my accounts to do some check and cleaning.
When I tap to login on Google, someone's saved Google accounts and passwords showed up.
I've also notice my phone been having sound playing on its own when I'm not using, like someone is watching YouTube and it only stop when I restart my phone.
I never let anyone used my phone since I bought it.
Did someone has hacked my phone?

Maybe someone hacked your Google account? Suggest you change your password(s), and enable two-factor login.

 

[Milo Willamson]

Enable two-factor login from different devices, that way no one can get you into itself

 

[ocnbrze]

@nPing did you buy the phone used? or brand new?