my problem is blue screen and my cell phone was turned off permanently!!
Problem description:Blue screen
To begin with, This problem caused a reboot loop. I have tried to restore my cell phone but still sometimes a blue screen appears and restart.After a period of time my cell phone turned off and when I tried to turn it on,I could not and the blue screen appeared repeatedly and I could not use my cell phone no way. Eventually my cell phone turned off and I could not turned it on no way.
iPhone 5s, iOS 8.1