I was drilling holes in the case of my fire TV stick when I found pic related

I was drilling holes in the case of my fire TV stick when I found pic related...
What the heck is it for?

Wifi/Bluetooth antenna

llooks like the antenna

By it isn't connected to anything???

Gaydar. You've been found out.

because you tore it apart.

There is a via in the middle, it connects the antenna to the other side of the board or to one of the inner layers

RFID

what is a via?
It was not physically connected to anything...

doubtful