Hi Sweetpeas,
I replied to you in another thread.
For some reason there appears to be a multitude of threads on this rather than one big one - so it's a somewhat labourious task having to go through all for an answer!!!
I had this and tried absolutely everything before resetting. However nothing worked. The only way this worked for me is:
- Settings
- General
- Reset
- Erase All Content and Settings
Then follow from there. It would be wise to ensure that you have backed the phone up to iCloud or iTunes prior to doing this.
Annoying as I've just come from Android and didn't have any issues with apps there. Doesn't inspire confidence at all, especially as a seemingly widespread issue.