If you're having trouble with call quality on your soundcore K20i earbuds, we've got some great tips and tricks to help you improve your listening experience and enhance call quality. In this article, we'll be sharing some effective strategies that you can use to ensure that your calls are clear when you use your soundcore K20i earbuds. Here are some steps:

1. Make sure you have raised both the volume of the earbuds and the connected device to the maximum. 

2. Ensure you're 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 obtain the correct call performance.

3. Try switching to the phone mic and make a call to see if the problem still persists.

4. Please test these earbuds in a quieter environment for the call to see if the problem still persists or not.