You installed or un-installed a tweak/theme/etc. that affected an iOS .plist or something withing the iOS system. This happened to me a while ago, only way to fix is to restore. I HAD TO restore because my iPhone wouldn't even show anything on the screen.
Note: Since all your data is shown as "other", you cannot make a backup to which you can sync back onto your device when you restore.
In realisty you need to do a backup and restore every 1-2 months with phones. They slow down because of clutter just like computers and it would take a huge amount of will power to clean it up manualy. I remember my Ipod 4Gen would slow down hugly after a while. Having Themes on it didnt help though.
This is a really old topic already, so i guess that topic starter already solved the issue.
There for i’m going to lock this topic.
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