I live a few hours from the nearest Apple Store, so I sent my iPhone 7 in for the $29 battery replacement, I figured, why not if it's only $29. Got an email a few days later that said it would cost $329 to replace with a refurb. When I got on chat with the actual repair location they said: "There was damage found in the device that could cause a safety issue if a new battery is installed. This is why the device is un-repairable. We can replace the phone altogether for $319. We can also return the device without replacing the battery and refunding the $29 plus shipping that you have already paid." They couldn't provide any more details. Has anyone every heard of that happening? When I sent it in it was working good other than the battery life being down some. I just asked that they return it. I was just trying to get a fresh battery while it was only $29.