How do you enable mms on an iphone?

My aunt gave me her old iphone 3g after she upgraded iphones. I have a feature phone so i decided to put my sim in the iphone and use it with data turned off. I cant sent mms messages tho. I have it jail-broken if theirs some way to solve it that way or even beter not that way. 
Thanks in advance

hmfoster5 years ago
you have to call the phone company.
Vyger6 years ago
Well that's what happens when you phonacate, you get no M&M's.
Cool, I just invented a new word. I wonder if its going to end up in a tech dictionary.
Vyger Vyger6 years ago
Phonecation --- verb, the act of plugging things into a phone that were not intended to or meant to be stuck into one.