I can't send picture messages
I can't send picture messages to other phones. I can only send with imessage. I can't log on to the internet using the 4G network.
iPhone 5, iOS 6.0.1
If you can't connect to the internet using your cellular data network you won't be able to send MMS messages. Check Settings>General>Cellular to be sure Cellular Data is set to On. If it is, contact your carrier to be sure that your data plan is properly provisioned.