I've been having a problem with text messages being delayed through imessage with just one other iphone. The problem has been going on since last Thursday, 9/4. I can send texts to the other person and they are recieved promptly, but I do not recieve texts for 1-3 days and then they come all at once. This is very annoying! We are both in zip code 44256 and both using Verizon.