Hi Bulent,
The specs says AT+CIMI, but unfortunetly this comment is implmented optionaly. This means I don't know if it will works with the 6310 (with the 7110 it doesn't work!)
cheers
Andreas
none of the nokia phones (6210, 8890) i've tested supports AT+CIMI (which is from etsi specs is optional). i would really appreciate if anyone can post ny other way of getting the IMSI.