Not a problem. Means low radiation.
If phone calls really so important, just shut up and get a Nokia,blackberry or Motorola

Yes,this time note 4 design is quite not so good compared to old plastic material,
this quite a mistake by samsung since they did not learn a lesson what iphone 4 did.
the space to recieve signal not wide enough while u can see other HTC or Apple iphone make a whole line for signal reception.
comparing me and my friend's s5,
we sitting inside a shop,while he sit inner place i nearer to open space.
but he manage to get 3~4 bar LTE while i only 2~3 bar LTE and drop to 3~4 bar 3G speed sometime.
even my friends note 3 have better reception as s5 
No matter online seller or on site seller,
as long the seller have good reputation from real user or your friends bought something from them before,
trusted and being seller for a quite some time and
make sure the phone you gonna buy is real and in good condition.
you may actually found a price range from 19xx~2499 around malaysia online seller,
either local sme or imported/AP set you may get,
sometime ppl would receive a dummy phone or replica/cloned set too or ignore and block you after you bank-in or transferred the money.
Honestly if could do COD then just do COD,
cause you may check the phone and phone condition direct on the sight.
even u ask those phone seller beside samsung can get cheaper price than Samsung retail price.
Local Samsung they have to follow the price what their head office/boss had set up,
but during promotion like RM2499 + Gear S + Gear circle free for 1st 100 units or Samsung buy 1 free 1 is what other seller can't do.