Mute

Russell7565 Said:

"Mute: People can’t hear me even though my mute button is not turned on."

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Three Thoughts:

A. Try Force Restarting your iPhone:

Save any information that need be. Then perform the restart.

Go Here: Force Restart iPhone - Apple Support

B. Try Manually Restarting your iPhone:

1. Go To: Settings
2. Select: General
3. Scroll to: the Very Bottom
4. Select: Shut Down
5. Slide Finger: to the Right
6. Wait: 30 Seconds
7. Power One: the iPhone
8. Try this Once More

C. Try this Link: If the Microphones on your iPhone aren't Working - Apple Support