Ever since updating to iOS7, my iPhone 4S keeps having an issue where iCloud will turn itself off at random times throughout the day (all options, contacts, photos, mail, calendar, etc.). Very frustrating, because every time this happens, all my contacts get wiped out until I turn it back on in settings and wait for it to sync with the cloud servers. It also routinely asks me to confirm my iCloud password, which never happened before I upgraded like this. Is anyone else experiencing this issue and, if so, have you any advice for a fix? I have a 5S 64GB ordered, which won't be here for another week or two (7-10 day group). I am not against a fresh wipe/reinstall/restore, but it'd be a PIA to do it twice in two weeks.