To most of the posters: Please, read once again the problem, than answer. In this situation, nothing is connected with double or triple or x-le entires in PhoneBook on the telephone and/or SIM card. For some other situations - yes, but in this - NO. I have Nokia 6120c (Symbian, S60 3rd edition platform, Feauture Pack 1, Firmware 5.11 - the latest) and I have the problem.
I will try to repeat steps which lead to problem: 1. You DO NOT HAVE number + number in your phone (and, yes, I'm sure I do not have this number in my phone, SIM card or anywhere else in my pocket) 2. You recieve SMS from this number (some good looking lady wants to hang out with me;) 3. You read the message and save the number (no matter of way saving it - pls do not bother with tips&tricks on this) *** You notice the message sender field in Inbox is still shown in number, not in name*** 4. Version 1:You reply to message by direct reply. *** You notice that recip field in SMS is correctly shown in Sent Messages*** 4.