Bluetooth Audio Dropout Issues | iPhone 11 Pro Max and iPhone X | iOS 13 and iOS 14
Posting this here in case it helps anyone else.
I have an pair of Sony WF-1000XM3 (the earbuds one, not the overhead cans) and they have regular audio dropouts. The music is playing and then there is a blank spot, and then it continue. I have sent it back to Sony for testing and they can't find any issues with it. I did my own diagnosis and I have found that if I turn *OFF* WiFi (have to turn off, not just disconnected from WiFi networks) then the audio does not dropout any more.
Since this is a persistent problems across two different iPhones (X and 11 Pro Max) and two different iOS versions (13 and 14) I suspect it is an engineering issue that inherent in the chip that controls both WiFi and Bluetooth. This is unfortunate as I expected better from a $1000 device.
I doubt that Apple can do anything about it now, I'm pretty much stuck with this device but I am extremely cautious about the next model of iPhone, if I do choose to go down that route again.
iPhone 11 Pro Max, iOS 14