Previously I have posted an article about water resistance test sony xperia z3 plus / z4, on this occasion I want to show directly that is through video, this video I make private and use my own smarphone with heavy heart I take a big risk if in case of damage , but I am grateful that the smartphone sony xperia z3 plus / z4, really waterproof, I personally have to prove it, I recommend for you, congratulations to watch may be useful to all friends who want to have a tough smartphone..