It seems that users of the Nexus 6P have found another issue with the handset, though this one doesn’t seem to be quite so specific as the issue with Telstra connectivity which Huawei are actively working to fix.
Apparently, if you’ve been using your Nexus 6P and found that the B-party (i.e. the person on the other end of the call) can’t hear you properly, then you might not be alone. Threads on Google’s Product Forum and XDA-Developers show that this seems to be a common problem. The issue seems to arise regardless of whether the phone is operated in normal or speakerphone modes, and while Google representatives have seemingly acknowledged the issue, the cause doesn’t seem immediately clear.
Some unofficial experimentation seems to show the issue relates to the Nexus 6P’s noise cancellation setup; like many smartphones today, the Nexus 6P accomplishes noise cancellation on calls with multiple microphones — one near where the mouth would be using the phone normally, and others around the body of the phone. Users have reported that covering the rear microphone on the Nexus 6P appears to solve the issue, whereas others are reporting that this causes the problem.
Dan hasn’t reported this issue in using his Nexus 6P, but it seems many others are. While Google investigates, other users are coming up with their own fixes. One clever user — Nicholas Fitchett — reported success in resolving the issue by disabling noise cancellation via root access on the Nexus 6P. He also considers this issue stems back to the Nexus 5 and Nexus 6 days.
No doubt we’ll hear more about this in the near future.