Q: imessage is not working

Hey Rockaphilly, toggle the air plane mode and see if it works. You can turn on the airplane mode and wait 30 seconds then you turn it off. Then check if the imessage work. I hope this helps.

Try

Using iMessage

http://support.apple.com/kb/HT3529

Troubleshooting iMessage activation:

http://support.apple.com/en-us/HT201422