How tough is the iPhone? durability wise? if you drop it in water is your phone investment tarnished? if you drop it from waste high will the screen bleed? if you throw it at your boss when he yells at you will it be effective enough to give me 5 minutes to get out of the building? ok well that's not that important but is there any tolerance to harsh weathers, extreme temps or anything like that or is this a fragile item? it just looks fragile but i'm thinking it's pretty strong?.