Hi guys; I have an iPhone 5 with iOS7.0.4. I've been having a problem lately where, unless my Messages app is open; the text does not send (iMessage to). So, if I'm typing a text, I hit "send", then minimize the app and go to my home screen, it essentially freezes the sending and stops Untill I open the app again. This is very frustrating! I've reset my phone, twice, hard reset, double checked settings. I'm not really sure what to do at this point. Any help?