2 ms·

There are tabs inside the device that change color on water intrusion for that.

• chris_wot 3y ago
  Which also change colour due to humidity changes.
  • lostlogin 3y ago
    … which is water. It’s actually impressive how resilient phones are.
    • winrid 3y ago
      True, but regular water rarely harms circuit boards for a one time exposure. Salt water, or soda, on the other hand... What Apple really needs is a USBC taste tester :)
      • HPsquared 3y ago
        Maybe they could use some kind of "corrosion canary"... some piece of metal that will behave like the circuit components in a standard way.
• izacus 3y ago
  Turns out it's impossible to prove what state those water tabs were in before the device was opened by a technitian in the back room ;)