I have a iPhone 5s that I only replaced because of battery issues. It's been sitting in my drawer for a couple of years and thought it would be good to hand off to one of the kids as a mp3 player or something. When Apple was running a deal on battery replacements I sent it in for that. I got a call saying that it has water damage and the main board was inoperable. I could have it repaired for $600 or they could recycle it for me for $25. Sending it back to me was not an option. It took 2 escalations to get someone who could authorize returning it as I was unwilling to pay for either of those options. It's now back in my desk.