Thank you for the response. I'm from Chennai, India. The call quality is not up to mark at the highest volume. That means I cannot hear the speaker voice properly. I think vocal is adjusted for indian variant mobiles. But if I decrease the value one bar, then it seems fine and I can hear the speaker voice nicely. So Please fix it in the next update. Thank you.
Slightly the call voice quality is improved. But still I can hear the heavy background noise from the speaker, maybe noise cancelling missing in this phone? And the voice clarity is not standard like any other phones in this price range. It is very disappointment for me. Try to resolve the issue in the next update since it is one of top priority funtion in any mobile device.
FYI, I'm in latest firmware only. PFA
You're welcome to take one of these similarly priced phones and test them side by side with your ZenFone 6 and if that phone really is that much better, please let us know which one it is. It's very common that people remember that something is much better than it actually was and it's not until we test it again and preferably side by side with something else (for reference) that we truly know the real performance.