Try a Factory Restore ...Menu-->Settings-->Restore Factory settings-->Settings only ...
Enter 12345 (Default security code unless changed by you) when prompted ..
Check if you have the latest Firmware on your Phone. You may do that thru' Nokia Suite . If any update is available do that, else you may re-install (refer the attachment) the existing firmware and see if the problem gets resolved.
If no change the you need to get the Firmware flashed at Nokia Care
2013-04-18 14:30 - edited 2013-04-18 14:34
Get the Firmware flashed at Nokia Care . That should surely get back the Themes and any other stuff that you might have lost
You can Download it using Nokia suite.
My nokia c2-00 call log missed calls are not deleating how to delete it?
My c2-00 cell got missed call but when i am trying to delete it it is showing invalid selection.