1979948 - Random message on phone front end

[sha]

Hi,

I appear to have accidentally unlocked my phone while it was in my pocket and now have the message '1979948' in a dialogue box on the front end of the phone. As far as I can tell, it doesn't seem to adversely affect the phone in terms of operation, but I can't seem to get rid of it. Does anyone know how to fix that?

Thanks in advance.