Can't receive picture messages on my iphone 4 (verizon)?

I know for a fact picture messaging is included in my pal. I have unlimited pic/text messages but the picture message doesn't work unless its through iMessage. I have people send me stuff all the time with me right next to them and the pic go through saying it was sent but i never receive them. This happened on my old non smartphone as well toward the 2nd year of owning it.

Look here for help https://vzwsupport.jive-mobile.com/#jive-discussion?content=%2Fapi%2Fcore%2Fv2%2Fdiscussions%2F782312