I am from Mumbai (India) when I am noisy area to be honest I am not able to hear the voice of the person from other side or traveling into local trains please moderator help us with the resolution and updates.
if you hold it at 45° instead of holding it how u hold usually you will hear it better that's work around for me... earpiece is at the top and keep volume down from max about 80 to 90 %.. Hope to get updates for the same.
We will have an update for India that will adress this issue in the next update. I will check if there's any reason why we get these reports from Hong Kong too.