Today my phone unexpectedly turned off. Upon trying to turn it back in it gets stuck in the samsung logo screen displaying the phone's version (GT-I9100). I've tried the recovery mode, clearing cache and reseting it to the factory data. None have worked. I've never rooted the phone, nor have i done any manual downloading. Apparently the only thing that i have left to try is the downloading mode, which I don't know how to work around with. Any help with this, or any other suggestions to fix the phone, will be greatly appreciated!