Ok my ex bf is somehow logging into my Apple ID on a different device (which I am pretty well sure it’s my old device that I think he stole) so therefore it was logged into my Apple ID already.. is there anyway that I can just change my username? And him not be able to access my information
iPhone XR
You can change your Apple ID email address on your current Apple ID so you retain access to your data and prior purchases. Note the restrictions in the article.
Make sure you turn off Find My Phone before signing out of the old ID. Once signed out and Find My Phone is off, then sign in with the new ID, then turn Find My Phone back on.
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.
How to change the username on my Apple ID
