I have used mine several times as a radio beside the shower. I love taking a shower and listening to music at the same time and the loud dual speakers on the Z2 are simply perfect for that. So yeah submerging and showering with it has happened several times already. Z1 had bad speakers so it didn't get used as much but still submerged that one too.
I took mine kayaking in the ocean a few days ago and it got wet (never submerged). When I got back, I just rinsed the phone with the hose,and it looks good as new. I got a few comments while washing it, lol.
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