I usually save my text conversation and pics I have sent previously to some of my friends show up as a blank now and some have completely disappeared and I haven't even deleted them. Some of my pics still show up in other text conversations I have with other people, just recently though they started disappearing. The problem is I wanted to save a few of these pics again to my camera roll but cannot because when I touch on the pic in the text message to enlarge it it just shows up as a black blank screen. Is this a memory space issue or something? Is there any way to recover the pics?