can you receive picture messages in a samsung behold t919 IF ITS UNLOCKED?

[Bear]

I WANT TO PURCHASE A SAMSUNG BEHOLD T919 FROM TMOBILE FROM AMAZON OR EBAY BUT THEY ARE ALL UNLOCKE AND MY CARRIER IS TMOBILE I HEARD THAT IF A PHONE IS UNLOCKE IT MIGHT NOT BE ABLE TO RECIVE PICTURE MESSAGES .. IS THAT TRUE?? WILL I BE ABLE TO RECIVE PICTURE MESSAGES.. PLS HELP