Somebody has my device paired with theirs and it wont show up on the icloud device list, everytime i go through my settings to keep them out they rearrange my apps and really mess with my phone was hoping theres a way to find out who it is
iPhone X, iOS 13
What to do after you change your Apple ID or password - Apple Support I suggest doing this before you change your Apple ID or password.
You can also add 2 Factor Authentication to your account for more security.
Link to contact Apple Support in the article.
Apple ID -Two-factor authentication
Two Factor Authentification availability
Apple ID - Using app-specific passwords
Apple ID - Two Step Verification App Specific Passwords
Something similar is happening to me, please read my thread.
were you able to fix it?
my iphone is hacked
