Hi, I am having imessage problems between my wife's iPhone 5 and mine. I've also had problems with other people's iPhones but not as much as between me and my wife. Problem is this. I send a message to her and it won't say deliver. It takes 5 mins to 60 mins. I sometimes have to call her , then, I can hear all all of them come through at once. I've thought that it could be because she is at home on wifi but, I don't think so as its happened out at town also. This has occurred since we got the phones. We restored them once already and it did not help. I can choose to send as a text and they go right through. Sometimes they work fine. I'm about to return the phones if this can't be resolved as I need reliability. Any thoughts would be helpful. Thanks.