Q: ios 9.0.1

Hi there sillyhairdoll,

I see that you have some issues with the microphone on your iPhone when using the back-facing camera to take videos. I have an article for you that will help you address this issue, and it can be found here:

Get help

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.

 

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

https://support.apple.com/en-us/HT203792

Thanks for being a part of the Apple Support Communities!