good point and looksy, its actually covered by a standard on what it has to do and how it has to be tested:Ahhh water resistance is a really good feature of phones. Never had any water resistance problems on my iPhone, despite me sometimes splashing/ lightly submerging it in water (eg to wash it)
I found Apple's marketing to be quite modest and iPhone water resistance is actually better than they advertise
Splash, Water, and Dust Resistant3
Rated IP68 (maximum depth of 6 meters up to 30 minutes) under IEC standard 60529
Regulators redefine the word stupid into an art form