We cannot change logo & tel.number. We bought this Panasonic KX F2130 in Budapest. At the time we returned to the shop asking them to give us the code allowing us to put logo and tel.number. They gave it and we put the logo&tel.number. Now, years later (abroad) we cannot change logo&tel.number (function #02 does not work, function#03 does not work;all other functions work - function#01,#04,#05 etc)