iMessage message freeze I have an iPod Touch 4G and my software is updated to iOS 6.1. I was messaging someone then suddenly it gave me an error saying the message was not sent and I had to re-try sending the message. 

After that my iMessage freezes if I go into that same conversation. I cannot delete that conversation because if I go back (does not freeze if my screen is not in a conversation) and press edit then delete, it reappears every 5 seconds. 

How can I troubleshoot iMessage on iOS?
The same exact thing is happening to me. I opened my imessage app and it's just blank white. I tried deleting from task bar, resetting, shutting off, logging out from imessage on settings, resetting wifi, but nothing seems to work. It's even updated to 6.1 and it's just frozen there.

The only option is to restore your device to reinstall the OS.