Need help figuring out a problem with my iPhone 6
So basically i lost my phone i the snow outside my house a couple of days ago, it was laying in the snow for about one hour before i managed to drive my car over it. i freaked out when i noticed but when i picked up my phone it didn't have any external injuries damages. i was relieved but when i opened the camera to take a selfie i noticed the rear camera didn't work, the app just froze when i switched from front to rear camera. i took it to a phone repair shop and got the camera replaced but it didn't fix the problem. My question is if anyone knows what the problem could be, and if it is fixable. My best guess so far is that the logic board is damaged but that is my best guess. thanks in advance!