In my Qualcomm box, the wifi signal is full and the signal is very good. But I usually use SIM card directly, 4G network. On the Qualcomm box, the white connector is the WiFi antenna. The distance in the car is so close, and the phone turns on the hot spot, there is no need to plug in another WiFi antenna. In fact, there are only a very thin wire for the wifi antenna of many devices.I know that there are 2x bluetooth.
I also have CP600 and bluetooth audio and navigation instructions work perfectly there but C600 Launcher sucks sorry for the word used.
I hope for a quick solution.
W-LAN connection is also very, very bad and weak there is hardly any or slow internet. Tried with router and smartphone connection is very bad