People can't hear me while talking but I can hear them

[AC Question]

While talking on my phone I can't hear nothing at all people can't hear me why

 

[B. Diddy]

Welcome to Android Central! Which phone? Can they hear you if you use speakerphone, or a wired/Bluetooth headset? If so, then your primary phone mic is either blocked or faulty. Make sure the mic opening isn't clogged with any debris.