I have just fixed the ipad / iphone Facetime Failed problem, last 7 days, the ipad / iphone facetime video call always drop, dropped in 20 seconds after the video call. make or receive FaceTime calls, the call lasts about 20-30 seconds,
I managed to find the real reason: the BT smart hub has dual bands wireless, 2.4GHz and 5Ghz, I have to turn the 5Ghz off, then the facetime back to working.
You can find the details in the video below:
