Thanks to Sony, I am able to get a review set of the Sony Xperia Z before the availability to the mass market. One of the selling point about this smartphone is that it is water and dust resistant. And so, I did it, dropping the phone into a jar of water in Slow Motion .
My setup is very simple. A jar of water, the Sony Xperia Z with all the covers checked and closed properly, a camera capable of shooting slow motion and a light source.
Check out the results.
So, it is proven. If you drop the Sony Xperia Z in the water, it is still ok (provided that it is less than 30 minutes and less than 1 meter deep).