How to Fix a Grayed-Out Speaker Icon on the iPhone 7 or 7 Plus

The grayed-out speaker icon on an iPhone 7 or 7 Plus, while you’re making a call, is one of the most subtle but frustrating errors you can encounter. Why is your phone blocking this one way of speaking into your phone, or sometimes stalling on startup, but otherwise seemingly fine? The answer involves an integrated circuit (IC) audio component, moving around slightly inside your phone and becoming…

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