I can't get through to O2's customer services and just wondered if anyone here knew what the score was.

I have an old Philips C12 on BT CELLNET. It is on a 07714 number and I think this is one of the real early ones that could be chipped. Am I right in thinking that these phones stored credits on the phone and not the network?

The problem I have is that I have decided to change the phone. So I got an 6210 to drop the SIM into which is open to all networks. However this SIM does absolutely nothing. Is this something to do with the fact that the SIM is of an old type?

Can anyone tell me what I would need to do to get it working?

Any help would be appreciated.

The C12 is a bit knackered but I can pass it on if anyone wants it.

Thanks.