mms will not work with this phone. ever! never! did i say ever??
it is just different guys,sprint uses picture mail cricket and most everyone else uses traditional multimedia= no mms on sprint simple phones,unless there is a verizon or other firmware flashed to it first,it's not possible,save your time.about 10,000 people tryed,and some greats in the flashing world have spent alot of time all with the same outcome,they are not compatible(the 2 platforms).

sad but true. so if your gonna try,look for a verizon,alltell or other firmware and successfully put it on the phone first,then try to get mms working.