Why is my phone’s microphone not working?

Step 1: Inspect the microphone for debris or anything blocking it. Note that some models can also be turned off in the device settings.
Step 2: Ensure that the microphone settings are correct. Open the Settings app to check that apps with microphone access are enabled.
Step 3: Check for software updates. A software update may fix the issue.
Step 4: Test the microphone with another app. The Voice Memos app is a simple and easy way to do this.
Step 5: Try connecting with Apple Support. If these steps do not work, then support may have additional information on fixing the issue.