I have a friend who is also using iOS 6. It seems when he texts me, after a certain period of time or number? My screen goes black, apple logo - as if the phone resets and comes back as normal. takes 4 seconds. It's very strange.
I also lost my custom txt and ringtone for a contact. Was fine the day before and then today, lost. Nothing in the fields. Very strange.
I also lost my custom txt and ringtone for a contact. Was fine the day before and then today, lost. Nothing in the fields. Very strange.