I'll be glad to see this come to market. Like any computer, today's smartphones can lock up and do crazy things. I've had several over the years have some app, unbeknownst to me, take over the CPU causing the battery to get hot trying to keep juice flowing to the processor. Had the battery been defective or damaged and left alone long enough, it might have suffered the fate of a total meltdown. A quick soft reset solves the problem, but the battery takes several minutes to cool back down to a normal temperature.