It took me days to figure this out but I did.....
I have simple mobile this worked for me .
Apn name:SIMPLE Mobile
Mmsc: find your providers Mmsc settings mines is simple mobile.
Remember the kicker is mainly your apn type fix that to the settings I put below.
Now this is the the code that fixes the problem
Go to APN. Type and enter this .
After this is all complete , press save apn and make sure the option is clicked under simple mobile or whatever your provider is and make sure mobile data is turned on....
And before you know it put your phone down and watch the magic hover over the phone lol.. mms works now!! It worked for me.
Message me or post here if you have any questions.
Have a great day.
Everything else don't touch leave as is
Go to settings