I want to know, if the battery of some non-replaceable type phone has a defect (considering out of warranty product), then what happens to the phone? Does it really becomes a throw away brick? or there is any other technical way around. As far as I've read, the non-replaceable battery, saves cost of circuitry by removing the extra layer needed for motherboard and battery. Thus the width of the phone also reduces. Curious to know if it really becomes a brick if there's something wrong with the battery.