Report after 4 days. Everything is fine except for workmanship issue on all 4 sides touching the screen - not smooth finish, only noticeable when lights reflected on bezel.
Screen was slightly yellowish but now turned bright after 3 days. Not as yellowish as I've seen some who shared photo.
Hissing sound and white noise is different. I tested it on first day. Just ran all benchmark and YouTubing and also silent recording. Noticed the actual hissing sound at first but somehow after I stressed it so much, the sound had now disappeared. Not 100% sure but I'm unable to hear it already with ear pressing to the logo. White noise is consistent sound like with tv with no broadcast. The hissing is higher pitch and pulses, not like white noise.
I bought from Apple Store online. Yesterday dropped by Machine asking about the workmanship issue and they say not covered unless I report to Apple Support first and they can take the case with Apple case number. I called Apple then and lucky did I do that because it's much easier since I bought direct online. Straight away they arrange for pick up and 1 to 1 exchange. Need to return box and everything. Estimate to take 1 week.
Contrary to what was shared by others, the call agent told me the return policy is 14 days from invoice date. This should be true since she told me that at first before I told her I'll be outstation and coming back only in Nov. So, arranging pickup and exchange only then. Hope new unit will be all ok. Taking a bet on it. Meanwhile, I've free use for 2 weeks before changing to a new set

really! thats good to hear. since Machine is an authorized dealer and they have Service Centre in KLCC so i thought it would be easier for me to purchase the phone directly from machines instead of from apple online store. Huuu..little did i know the hassle of returning/exchange policy is different between apple on9 and machines. because i thought machines will implement if not all but at least what the apple online store offer (ex : 1 to 1 return..not reburbish items) . weird.