Poor call quality can affect either end of the conversation. Here's how to systematically diagnose and improve it.

1. Ensure you have turned up the volume on both the earbuds and your connected device to the maximum.

2. Try different ear tip sizes and ensure a proper fit for a tight seal. If the earbuds are not worn correctly, call quality may be compromised.

3. Try switching to your phone's built-in microphone for a call to see if the issue persists.

4. Test calling with the earbuds in a quiet environment to see if the issue persists.

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