My iPhone has removed all my contacts, but bizarely the numbers are still there, for instance in messages the number is there but not the name. If I go to contacts I don't have any!
If I want to send a message to anyone if I type in their name their number comes up, but not their name iyswim.
And a few days ago the email account on hotmail I use for ebay won't let me delete messages. Says its unable to move to trash.
I also use what app and all contacts have disappeared from favourites.
My iPad has no problems at all. I back both up when I recharge via a plug socket ( I don't have another device) to iCloud and I can't see anything different in the iCloud back up for either.
I've tried turning it on and off. And yes, recently I updated to iOS 7! What do I do? I'm starting to hate the thing.