alt Hacker News> A phone needs to handle some rain droplets falling on its screen, anything more than that is a gimmick that's not worth the downsides it comes with.
I submerge my phone as a matter of normal use because I can. I take it into pools and hot tubs, and I clean it in the sink -- I personally wouldn't trade that for a battery door.
Have you had issues because of wear and tear? I trust the water proofing completely until my phone has fallen out of my hands onto the floor.
Then I won't chance any submersion and I can't think of an accurate way to test it.