I am on 8.3, and I'm having an issue where I can't delete old conversations. When I go to delete them they initially delete, but once I exit the message app all hell breaks loose. If I try to go back into the message app I will get a white screen and it hangs there for about 30 sec. While it is there the phone is froze, if I press the home button nothing happens, then all of a sudden it will close them open up the compose message screen. Once I hit cancel, it will go back to messages except all the messages now are gone . Once you restart the phone all of the messages are back even the ones I thought i deleted . I went in to setting and messages and got the same white screen after I deleted conversations. But every other app opens normal. I have been in contact with apple. They suggested restore and set up as I new, I did that except iTunes put all my old apps back on the phone ??? I was under the impression that I would have to manually install them back. But anyway after fresh install it still does it. Any suggestions??? Sorry so long, apple is supposed to call back tomorrow, I wonder if it's a hardware issue or a true bug.