Only had my Xperia Z1 for 3 weeks and tonight it refused to switch on but on close examination I found I could slightly make out icons on my screen, I actually put my music on which took me ages to turn off cos the screen was black. On another forum I read that this has happened to someone on 3 separate phones Mine is being collected at my house for another one. If you YouTube. Random Defective Display / Screen Problem Warning you'll see what I mean. Is this currently happening to anyone else?????