My niece has locked her Samsung Jet S8000 and now the screen is asking for a password, but she has never set one up?

Can this handset be reset or find the pin so she get the handset sorted?

Tried all the usual 12345, 00000, 00000000 etc and nothing works and also the screen does not accept the * or # keys keeps saying unsupported characters so its looking for digits only?

Regards