I had one problem (in the one week I used my phone before breaking it.) I had the same problem with my 920. Every once in a I wouldn't get SMS messages from someone. It wasn't everyone either.
With my 920 every so often I would get a message from my son that was almost a week old. I told my son it was his phone problem. He said it was mine. When I got my 1020 I was texting a friend and I was not getting any replies from her. I think finally I called her or got an email from her and she said that she got all my texts and replied. I put my sim card in another phone and all her messages were delivered. 4 days of her messages being stuck. I didn't get any old messages from anyone else and I was receiving text messages from others with no problem. Strange huh? Never had a chance to look into what was causing it because my sim tray got stuck and I basically ripped it out of the phone in a temper tantrum .. Sending the phone to Nokia on Monday. I have been using my iPhone again for a week now. I really love the Nokia and resent having to use old faithful !!
With my 920 every so often I would get a message from my son that was almost a week old. I told my son it was his phone problem. He said it was mine. When I got my 1020 I was texting a friend and I was not getting any replies from her. I think finally I called her or got an email from her and she said that she got all my texts and replied. I put my sim card in another phone and all her messages were delivered. 4 days of her messages being stuck. I didn't get any old messages from anyone else and I was receiving text messages from others with no problem. Strange huh? Never had a chance to look into what was causing it because my sim tray got stuck and I basically ripped it out of the phone in a temper tantrum .. Sending the phone to Nokia on Monday. I have been using my iPhone again for a week now. I really love the Nokia and resent having to use old faithful !!