The mic stopped working on my iPhone.

[iMore Question]

I can't voice memo or voice text or use Siri.

 

[Just_Me_D]

Go to Settings → General → Keyboards, and then scroll down and enable the toggle next to "Enable Dictation".

 

[Ledsteplin]

Be sure you're using the mic at the bottom of the keyboard, and not the audio text mic to the right of the text field.