I've never had any issues with PDF's on my iphone, until about 2 weeks ago. Any link to a PDF now will not open, this is the case in gmail and in safari. Nothing opens, just looks like it will and just shows a black screen. I've done a reset, deleted Adobe PDF reader and reinstalled. Nothing has worked. Can't find any fixes when searching online. No idea why I suddenly can't open anything. I've an intalink app with bus timetables and none of those open any more, this causes me an issue as I don't drive and when I'm out I can't check any timetables. I tried their site on Safari and the links are all pdf and they won't open either. I'm very frustrated.