How to reset phone

tigerbutterfly wrote:

I have an iPhone 4s. When I make or receive calls the caller cannot hear me. I tried resetting my setting. it didn't work. What else can I try?

Get help with hardware features on your iPhone, iPad, and iPod touch - Apple Support

Have you tried a Forced Restart? Hold down the Home and Wake/Sleep buttons at the same time for about 15-20 seconds until the Apple logo appears.