I am on lastest update one which is available in first week of July. I know speaker is in camera module but call audio have issues like rattling/shaking skipy audio like of overscrated audio CDs even when signals on both sims is full it sometimes feels like person is standing near railway track when train is crossing while talking to me. I am on 8gb/256 version and its sad to know such good phone is bad Phone call audio quality wise.
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.
