2 thoughts on “Why your waterproof phone isn’t actually “waterproof” the way you think it is

  1. My wife killed a mobile byhaving it in a bag with a towel wrapped around her wet bathers, wet with salt water.
    Immersion in 1.5m of still water is far less pressure than the transient pressure as you insert your hand into the water!
    Splashing increases the pressure a lot.
    They really, really should use salt water to do the IP tests for consumer goods. Pure water is so non-corrosive & non conductive it’s a cheat.

  2. Salt water would be good, but I can see the issues with using it — for a start there’s standards in place for IP testing and you’d have to rejig those and *then* define matters like the salinity of water, and *then* there’d be the issue of how you build in salt water resistance, how long it lasts (everything corrodes eventually) and so on.

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