I recently got an IPhone 11 and gave my son my old IPhone 8. I synced my new phone at the store using the cloud and got all my info. My son took his SIM card from his old phone to put in the Iphone8. Now our contacts are linked. If he adds one or deletes one I had it also does the same on my phone and vice versa. How do I fix this issue?
iPhone 11, iOS 13
It would seem that you did not wipe your old phone before giving it to your son. You need to follow these steps to prepare the device for him, What to do before you sell, give away, or trade in your iPhone, iPad, or iPod touch - Apple Support
It would seem that you did not wipe your old phone before giving it to your son. You need to follow these steps to prepare the device for him, What to do before you sell, give away, or trade in your iPhone, iPad, or iPod touch - Apple Support
Contacts help
