I have been having this issue for a while now. It used to be just sometimes but now I have had to resort to using email to send and receive pictures. At first I thought it was because I was using handcent. I uninstalled that and tried hangouts and I have the same issue. I then tried chomp and again no help. If I get a text with a picture in it I get a box that I can click to download, it pretends to work for a minute or two then tells me it failed to download. Please help, is it something with settings? I am using a Nexus 5.