A noticeable difference in noise cancellation between ears is almost always a fit issue rather than a hardware problem. Here's how to even things out.

1. Try different ear tip sizes. You can use different sizes for your left and right ears to ensure a tight seal on both sides.

2. After adjusting, run the Fit Test in the app to confirm the seal is optimal.

3. Place the earbuds back into the charging case, close the lid to disconnect, and then open the lid and wear them again.

4. If the issue persists, try resetting the earbuds.

If you need further assistance, please don't hesitate to contact us.