i was having this issue and i fixed it fast and easy
Step 1. go to setting on your phone
Step 2 . then go to wireless and networks.
Step 3. Go To mobile Networks
Step 4. click Access Point Names.
Step 5. click the Menu button on your phone
Step 6. click the Reset To Default.
you are done
you should have somthing like this
Enjoy your picture messages i was on the phone with support they tried everything had me reboot remove applications and everything but they never had me reset my Access Points i did this on my own and solved my issue.
hope it works for you.
you should just have to touch the screen on the pic then it should pop up and say view or save