Hi, I turned off my phone because it was acting really really slow and when I turned it back on again, all I get is the "samsung" logo on the screen like its turning on. Only issue is that when it's about to get to the main screen, the screen turns blank again. then comes that "samsung" logo again. A few times it gets as far as the time on the screen when you have to unlock the screen. and the screen says (no service), then again the screen goes black and the process starts over again. Sometimes I am able to unlock the screen, then it mentions something about the processor, then the screen goes black and there we go again. it's been doing this about an hour now and the same issue came up 2 days ago, but it started working about 30 mins later. If anyone has any idea on how to clear this headache up???