My iPhone 5c screen turns blue and restarts. When it restarts the screen starts flickering.

I've been using my iPhone 5c for less than a year and recently, it is just getting into my nerve. The screen turns blue and it restarts automatically. At time the screen remains blue and I have to manually restart it. I restored the phone but to no avail. After upgrading to iOS 8.3, the issue was not there until recently it happened again. Please help me on this. Disappointed.