8Plus it doesn't make me change the numbers in the phonebook
Hi I have a problem with iphone 8Plus it does not make me change the numbers in the phonebook and add contacts I do not know what to do I tried to restart it and perform a reset but then the problem returns after a few weeks I do not know what to do I tried with the assistance of Apple but with their advice I have not solved anything. Can you give me a hand? Thank you.
Original language Italian Translated with Google Translate
[Re-Titled by Moderator]