Hello, sorry for the inconvenience you are facing. When you use the headphones with the Line-in mode to pair to your computer, please also check if the correct mode you have chosen. In the Line-in mode, when you open the call APP on your computer please make sure you have chosen the " Headphone-Realteck (Audio)" both on the APP and the laptop as the output.
If you use the Bluetooth mode, please note Stereo(Headphones) one is for Music and Video, Hands-Free(Headset) is for the call, so you need to choose the right mode per your usage. When you connect the earbuds to the laptop and choose the right mode, then you could open your Call APP and go to “Audio”, please make sure the “Speaker” and “Microphone” item all choose “headphone”-Soundcore Life Q30".
If the issue still persists, don’t worry, please don’t hesitate to contact us at firstname.lastname@example.org by detailing your order number and the problem you come across. We will reply you within 24 hours.