I'm having a few problems with iMessages recently.
1. I can only send text messages to certain people, even though we both have iPhones are are both connected to 3G or LTE. But I can send iMessages to most people.
2. I'm not getting all messages people send me.
3, People are not receiving all of my messages. They even sometimes get just half of a message.
This has been going on for almost a week and friends with Verizon say they've been having similar issues.