[SMS] Won't send messages through to some people
well, as the title says, my iPhone won't send SMS messages to some people, namely my girlfriend. We are both with the same provider, Rogers. I can send lots of messages to other people, and she can receive messages from other people, but whenever I try to have a conversation with her I need to delete the history before sending a message to her. It only seems to work when there is no history between us at all. I thought it might have been a poor memory management issue with the SMS so I deleted a lot of the conversations with all my friends, but it still did it with her. I keep getting error sending message. Any ideas?