tldr; this was fixed. It just didn't get marked as fixed by Google. I was following this issue on the Nexus 4 (comment #20 of OP[1]), way back when and even fi

tldr; this was fixed. It just didn't get marked as fixed by Google. I was following this issue on the Nexus 4 (comment #20 of OP[1]), way back when and even filed a more detailed follow up issue [2]. In short, the APIs needed for echo cancellation, noise suppression and automatic gain adjustment weren't making use of the Nexus 4 hardware (lack of driver, missing code, I don't know why). However, the issue was fixed in the Android 4.3 OTA update. I can verify this because at the time I was working on a VoIP app and my Nexus 4 was my primary phone and it was driving me mad. But in all fairness, it was fixed by Google. [1] https://code.google.com/p/android/issues/detail?id=41626#c20 https://code.google.com/p/android/issues/detail?id=41626#c20 [2] https://code.google.com/p/android/issues/detail?id=42978 https://code.google.com/p/android/issues/detail?id=42978