I wonder if you could help somehow. My Iphone turned off and I can't turn it on again. I've changed the battery, but didn't help. I've put it into recovery mode, on the screen showed up a message to go to support. apple.com/iphone/restore. And I followed the steps many times and it's not working. I tried DFU mode, itunes doesn't see the phone. And I installed some other software for repairing, everything doesn't see the phone. I have no idea what is wrong.. I will be so grateful if someone could help. Thank you.