Apple iPhone 12 leather cases have a different cut out at the bottom for speakers (pictures) | MacRumors Forums
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Mobin Electroplating Soft Silicone Back Cover for Apple iPhone 12 Pro Max Silicone Golden Plating Crystal Clear Logo Cut Mobile Back Case Cover Compatible with Apple iPhone 12 Pro Max - Black :
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If you hear no sound or distorted sound from your iPhone, iPad, or iPod touch speaker - Apple Support
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iPhone 13 users still waiting for Apple to address lack of noise cancellation for phone calls - 9to5Mac
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