I think my phone is hacked

That Could be a android rat. 
-what u have to do is :
if you have a backup and okay with factory reset like @"Owl"  said.
then thats the best thing to do.> 100% will remove the rat <
but if u dont remember few passwords for whatever that is auto login  or photos etc. that  u can lose by doing this then thats the problem.
-
or u can install a good antivirus. not sure if eset have a mobile version but eset / norton will do the job.
( if its crypted payload the antivirus wont detect it btw)
but people who spread their rat gets detected fast :kekw: so.
- if u have any question let me know