Knot embedded lte4 Bluetooth external

Hardware
1

Hello
How I can add External antena for bluetooth ? LTE and GSP have external SMA buy no bluetooth.
Device is in the box, so i need better receptions.

I open device plastic box, and there is one free UFL connector, so i think it is for bluetooth

My question is it ufl for bluetooth ? And if it is, where to drill hole on plastic housing for SMA ?
Can I use one more new HGO-LTE-W antena for bluetooth.

Thanks

2

bluetooth
bluetooth1920×2560 504 KB

3

Hello
YES, connector is for bluetooth.
Plastic box need to be driled in dot uper of SIM slot for SMA.
Wifi antena 2,4GHz need to be used for bluetooth.
In terminal commnad:
/iot/bluetooth/set antenna=external
/system/reboot

It work.