It explodes and you die.
I wish for an iPhone 5s right now that doesn't break, kill me, or do any other harm. Or doesn't get stolen, drowned, killed, sliced, diced, shattered, cracked, dented, chipped, or anything. It also must work exactly as it is intended. So everything works and nothing can happen to it or me or anyone else; it cannot be a murderous phone or kill people with a magical pony laser beam that comes from the camera flash. Again, it must be an iPhone 5s as well. Have fun.