Contact sharing issue on iPhone 11
My mom’s contacts on my phone with my contacts, my contacts in her phone with her contacts. I need help with this contact sharing issue in iPhone 11
Question marked as
Are you sharing an Apple Account? Are you sharing any email accounts?
If you're sharing an Apple Account, you should stop that. Apple Accounts are designed to be used by one person and only one person.
How to “unshare” an Apple ID - Apple Community