Is anyone else having an issue with iMessage? I have 1 other friend with an iPhone using the beta and when we were both on beta 2 we had no problems, it worked great. We both upgraded to beta 3 and that's whey iMessage no longer worked. We both sent multiple messages to each other and neither of us received any of them. We both turned iMessage off and went back to regular texting, it is a beta after all. Last night we both updated to beta 4 and iMessage still isn't working for either of us to each other. I've been searching but can't find anyone else complaining about this issue.