I believe you but I've honestly never heard of anybody suffering "random cellphone death" - Apple or otherwise. Everybody seems to break them or upgrade them long before that.
I had it with Nexus 5x. It died after 1.5 years when I used an app to get a train ticket. It turned out it was a known hardware bug judging by forums. It was in Norway so the phone was still under warranty and it was “repaired” - the motherboard was replaced. Still not much later I bought the original iPhone SE. I just did not like the idea of phone stopping working for no reason.
