I have iphone 4 with gevey ultra. It worked perfect, I could turn the phone off and like magic gevey ultra would do its thing and I could make calls. My screen got cracked and I had it replaced. Immediately after picking it up I saw the gevey message to dial 112, turn airplane mode off etc. I had never had to do this before. Ever since then I have to manually do the steps to get my phone to make calls. Sometimes it take me a couple of days to get it going. The weird thing is, my sim tray is turning copper/burn colored. I dont know if If the repair place put a cheap screen in that is over heating my phone or if replacing the screen shorted out my gevey card, or if my sim card keeps shorting out. I have replaced the sim when I could not get my phone to work for days and it worked instantly with a new sim and the manual gevey instructions. I dont know what to do. Any thoughts ideas? The tray looks worse than the image attached. IT IS NOT A REFLECTION. It looks like it is burnt where the copper color merges with the normal color.