If you're experiencing poor call quality when using your soundcore Liberty 4 Pro earbuds, there are several tips and tricks you can use to enhance the call quality and improve your overall listening experience. In this article, we'll be sharing effective strategies for fixing low and unclear voices on calls when you use the soundcore Liberty 4 Pro earbuds. To fix this issue, please try the following steps:

1. If using only one earbud, ensure the other earbud is in the charging case.

2. Replace the ear tips with ones that fit more snugly and ensure the earbuds are positioned correctly to create a tight seal. Improper fit can affect call quality.

3. Verify that "soundcore Liberty 4 Pro" is selected as the audio output device on your connected device and increase the volume on your device.

4. If the call was made through an app, try using your phone's native calling feature instead to see if the issue persists.

5. Test the earbuds with a different Bluetooth device and in a different environment to see if there is any difference.