You probably will have to do a soft reset then.
*#7780# (*#rst0*) - This will soft reset your phone. It is different from *#7370# because all data, like contacts, calendar and notes, are not removed. It will only reset the phone settings, such as profiles, themes and shortcuts. The default lock code is 12345.
I've never done a reset so I can't say for sure it will solve your problem |