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I wouldn’t be too scrared to wash it in the sink, but that’s just me. I’ve been using a waterproof S7 for years, never had a water problem. Tests have shown that despite the more conservative ratings, the iPhones are more water proof than the Samsung phones.
 
I wouldn’t be too scrared to wash it in the sink, but that’s just me. I’ve been using a waterproof S7 for years, never had a water problem. Tests have shown that despite the more conservative ratings, the iPhones are more water proof than the Samsung phones.

Except that some phones might have manufacturing defects like yellow screen, bad mic, bad seal, etc. No way to know if it the water resistance is up to spec or not. I wouldn't risk it.
 
Just watch some tests people have been doing for the last few years. iPhone outlived many competitors even in deep water
 
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