Samsung Galaxy Note 4 - Rear inside pinouts

Hi,

My note-4 has a number of pins under the back cover.

I believe that three of these are for wireless charging of the battery (according to the pinouts of aftermarket charging pads I have seen).

However the Note-4 has 9 pins on the rear. I am wondering what the remaining 6 pins are used for?

What I am wanting to do is attach an external aerial. I have been told that the RF sockets should not be used as they are likely to leave the phone unusable. I am wondering if these 6 pins possibly map to the three aerials inside the phone. Ideally I am looking for an answer on what the pins actually are connected too.

Thanks