As I understand it if you turn the Starlink WFI the phone app will not work,
you can supposedly log into the Starlink router using your browser NOT the app.
As I said I have the Starlink router WFI running and the ethernet adapter to my netgear router,
both are working and both show very good results on speed test and in normal usage.
I have tried to overload by having 2 TV's with Fire sticks running, 2 phones on the wifi running videos, 2 kindles streaming video,
and both laptops streaming videos all at the same time.
The 2 Firesticks, 1 Phone, and 1 Kindle were on the Starlink WFI, the others on my Netgear router WFI.