I don't think I understand what allowed means in this context because on my OnePlus Nord phone, I have an app called GPS Test which shows me that I have so many GPS, so many GLONASS, and so many Galileo in view.

Strange thing is there is no Chinese GNSS in view. (I was on a short trip to Bali recently and iirc I did see Chinese GNSS on the app while there so I think the app and phone hardware is capable of picking up Chinese GNSS?).