You can have this problem with any smartphone. Usually it's some app that's pegged a CPU, or (worse) the data connection. Don't know about Android, but on iOS y

You can have this problem with any smartphone. Usually it's some app that's pegged a CPU, or (worse) the data connection. Don't know about Android, but on iOS you can pretty quickly identify an app that's gone nuts (the last time "60% at 10AM" happened to me, it was Apple's cloud sync), and there are readily available tools if you want to dig deeper. A few years ago the same thing happened on a Windows phone (a fine phone, oaky? :-) ). Some system process, maybe a driver, was pegging the CPU, making the device hot to touch. With no system updates on the horizon, all AT&T could do was say "We can replace the phone with exact model under warranty." "But the new phone will have exactly the same software, and that same bug." "That's all we can do." I'm pretty sure the salestype was foggy on the concept, and frankly I'm not sure what I expected a salestype to say. When you're powerless you're not necessarily rational, on either side of the fence. I wound up with a discount on another brand of phone, the market in action, I guess.