You have to get handoff and continuity working... I did it by buying a real Mac wifi + BT chip. There is an official forum for this on here. Good luckplease help how do u make facetime work on 10.12.6 ...i can log to my apple acct in facetime but i cannot make call...please give me a linki for complete guide on facetime
Did you get continuity fully working? Again, I would look at the tutorial to make sure you have everything set up properly. Only Apple Genuine WiFi + BT cards get the best results...i used broadcom wifi + bluetooth dw1560