dialer microphone icon is dead

[Android Central Question]

Simply, I used to hit the microphone on the dialer, say a store where I want to go, it would load the store info and I could click a dial phone button and call them. Now NOTHING happens, like buttion is dead. A few days ago while it was breaking, it started playing a video (just heard some audio) when hitting that button, but now nothing. I also turned phone off but it is still not working.

The microphone works fine. I hear the noise when you click the button.
The microphone icon button next the green handset button is what is broken.

 

[Rukbat]

"The little green handset button" is the icon for the Phone app. What's next to it depends on what you put next to it, or what phone you're using if you haven't moved anything. The mic icon in the Phone app is a mute button - it doesn't do anything but a hold-like function.

If you're referring to the Contacts icon (usually a silhouette of a person), you can install any Contacts app you like, or you can back the entire phone up (if you haven't already - anything important should always be backed up) and reflash the firmware. (Then restore from the backup.)