Liquid Ingression Indicators On iPhone 5

darngooddesign

macrumors G3
Jul 4, 2007
9,323
241
Atlanta, GA
They turn red when exposed to enough moisture; its so Apple can tell if someone spilled water on their device and is now trying to get it replaced as a regular warranty issue. Many people think it happens too easily so there is a sensor inside the device as well which you can make Apple check.
 
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