I had an issue with my pixel and had to send it in. The phone got ran over by a car and was smashed. It could be turned on but I could not do a factory reset. I have financial and other private information on it. So the first thing I did was try to keep it on for days until the battery ran out to see if the hardware encryption would help secure the data. After that I still wasn't sure if the information was secure enough so I took a drill through it to destroy as many of the ICs that I could. My wife then pointed out that maybe this self destruction that I did would violate some terms and void the insurance even though the phone was useless after being run over by the car. So, in the end, I decided to just buy a new phone without doing a trade in or insurance claim. The $500 or so was worth not risking PI.