my cousin logged into her Apple TV on my account.
how do you log out of someone else Apple Music account on your phone?
iPhone 8 Plus, iOS 13
User profile for user:
CarlAVII
User level:
Community Specialist
Good afternoon neva113,
Welcome to the Apple Support Communities!
I understand your cousin accessed her Apple TV account on your iPhone. Are you asking about Apple TV or Apple Music? Try restarting your iPhone. Open the Apple TV app and see if you are looking at your content now. Open the Settings app and go to Settings > iTunes & App Store. If her Apple ID is showing instead of yours, tap on the Apple ID, sign out, and then sign in with your account information.
Your iPhone does not work the same way as your Mac. You can't have multiple user accounts on the iPhone. In the future, I would suggest that you do not allow anyone to change the Apple ID on your device.
Share Apple TV with multiple users - Apple TV User Guide
Take care.