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Microphone does not pick up sound | Bose QuietComfort Ultra Earbuds
Check for and install any available product updates
Regardless of the issue you are experiencing with your product, try updating it. Visit btu.Bose.com and follow the instructions to ensure your product has the latest features and enhancements.
Make sure the microphone hole on the edge of the earbuds are not blocked.
If the stability band is not aligned properly on the earbuds, it could block the microphone and cause poor mic performance and/or feedback.
The microphone is located here (1) on the earbuds.

Make sure the microphone hole on the stability band (2) is aligned correctly and that nothing is blocking it.
See Changing the stability bands for complete instructions.
The microphone is located here (1) on the earbuds.
Make sure the microphone hole on the stability band (2) is aligned correctly and that nothing is blocking it.
See Changing the stability bands for complete instructions.
Be sure you're wearing the earbuds correctly.
A proper fit is important for comfort and sound quality. If the earbuds are not worn properly or positioned incorrectly, audio and microphone performance may be affected. See Wearing and adjusting your earbuds for more details.
Reset your product.
Much like rebooting a smartphone, your product might need to be reset on occasion to correct minor issues. For more information, see Resetting your product.
Your earbuds need to be replaced.
If the steps above did not resolve your issue, your earbuds need to be replaced. Click START A REPAIR OR REPLACEMENT below to begin the process online — the fastest and easiest way to get service.