A friend of mine just bought it last year an iphone 5 its still under warranty i guess 9months she put it her phone together with other phones due to an outdoor activities, after weve done of our activities, to her surprise her iphone died and the other phones was ok only her iphone is no longer functioning, i tried to turn on but it wont work, we really dont know what happen, she went back to the shop were she bought it, but they (shop) wont replace new one, anyway our concern is why it happen that that iphone is no longer functioning? just want to ask for the expert what really going on.