Sound on video from back camera not working on iPhone 6

Hi Liz2016,

The resource below provides some basic troubleshooting steps to try for the issue you are having with the microphone on your iPhone 6 when recording video.

Get help with the microphones on your iPhone, iPad, and iPod touch

If audio from video recordings sounds faint, or Siri can’t hear you, make sure that the microphone near the iSight camera—on the top, back corner of your iPhone—and the receiver isn’t blocked or covered.

If you still have issues after testing the microphone on your device, try these steps:

1. Unplug any accessory plugged into the headset jack.
2. Avoid blocking the microphone and iSight mic with your fingers while holding the device or recording video.
3. Remove screen protectors, films, or cases that cover the microphone, iSight mic, or iPhone receiver.
4. Clear any debris from the microphones or iPhone receiver. Refer to the user guide for your device on microphone locations.
5. Restart your device.
6. Make sure you have the latest version of iOS.

If you've tried these steps and people still can't hear you on phone or FaceTime calls or Siri doesn’t hear your requests, contact Apple Support.

Take care,