Hi, oasmus!
Thanks for reaching out to Microsoft Community and posting your concerns. We are sorry to learn you have issues with your new Surface Earbuds that doesn't allow audio on the left earbud when you take a phone call from your smartphone and when enabling audio with Microsoft Team. This isn't the experience that we want you to have. Thanks for taking the time to let us know about this and allowing us to help you out.
Please allow us to ask the following:
- May we know the make and model of the smartphone you're using?
- What other apps are involved when the issue happens?
- Have you tried the earbuds on another host device to see if the same thing happens?
- Does it happen when you make outgoing calls or does it only happen when receiving calls?
In the meantime, kindly perform the following on to your Surface Earbuds.
- Place the earbuds back in the charging case for 15 seconds, then check if the same thing happens.
If that does not resolve the issue, please try to restart the host device. In your case, it is your phone.
- Update Surface EarbudsAfter performing this, kindly check if the hissing sound is still present.
If it is, try to disconnect and reconnect the earbuds again via the Surface Audio app.
- If the issue is still present, kindly Reset Surface Earbuds.
We hope this helps you out and let us know how it goes.
Kind regards,
Janette_Z