Enabling Phone Noise Cancelation helps you reduce the surrounding noise on phone calls when you are holding the receiver to your ear. And this article introduces how to enable and disable it for your convenience.
Step 1: Open Settings > General > Accessibility.
Step 2: Locate Phone Noise Cancelation, and tap the switch to turn it on.
Enter Settings > General > Accessibility, and then click the switch beside Phone Noise Cancelation to turn it off.
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