There are several tips and tricks that can help you improve the call quality and enhance your overall listening experience. In this article, we'll be sharing effective strategies for fixing intermittent voice on soundcore Sport X20 calls, so you can enjoy uninterrupted calls every time. Keep reading to learn more.

1. Replace the earbud tips with ones that fit more snugly in your ears and ensure that you are wearing the earbuds in the correct position to create a tight seal. If the earbuds are not worn properly in your ears, you may not achieve the correct call performance.

2. Fully charge your earbuds and reset the earbuds as per the steps below:

- Place the earbuds in the charging case and leave the case open.

- Press and hold the charging case button for 10 seconds until the charging case button LED strip flashes white rapidly three times. This confirms that the reset is successful. 

3. Ensure that the audio output device selected is "soundcore Sport X20" on the connected device and turn up the volume on your device.

4. If you make a call through an app, please try using your phone to make a call instead to see if the problem persists.

5. Try testing your earbuds with a different Bluetooth device in a different environment to see if there is any difference.