My Iphone 5c keeps crashing and turning off by itself?

I have had my Iphone for about 3 months now, I have only dropped my phone once and nothing happened (about a week ago). MY phone has only recently started crashing like every 15 minutes or so, It will turn off by itself, The screen will turn blue or start flashing colors. These colorful vertical lines will show up on my screen and then my screen will slowly fade away.

Powercycle it, if no better take it to a repair shop

First thing to try is a battery replacement this usually sorts it just remember to heat up the back just before you pry out battery and pry on the side with the volume keys not the logicboard side

thanks con! It worked! My screen was flickering and i really doubt the battery could cause that. But i guess it did

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