Moin moin, I have the following problem, have in my “new” 850 a 15-year-old Bosch car phone what I wanted to try to use now… …but, that doesn’t recognize my sim cards… I tried it with a 7-year-old Sim card, also worked well, recognized the sim, I had received but I didn’t make phone calls… right after I dialed, of course, I pressed the green button but the call didn’t even go out… someone knows about the din like out? can that be that I need a 15 year old GSM SIM? does someone still have an active SIM? say hello to the moose! Chris