I am a firefighter in IN and a couple of weeks ago i was on a training fire and it was bitterly cold. I put my phone in my inside fire coat pocket and was in and out of the fire and back into the cold. After hours of doing this i pulled my phone out to use it and the screen was cracked. I didnt hit the phone or have anything near it so i am thinking the influx of temp might have cracked it. What do i do?