

Hah.
This private company has used sattelites (ones even higher up than Starlink sattelites) to map RF signals all over the globe for a decade. https://en.wikipedia.org/wiki/HawkEye_360
This includes cell signals, they can map every single cellphone in the world and it’s location. Newer cell signals (4G and 5G) don’t leak any identifying signals, but 2G and 3G signals leak signals that identify your exact phone, and is 100% visible from space.
I would highly recommend Ente Auth for 2FA on iOS devices.
It allows for export to a file that you can then import into other apps. You can also use their own sync service.
Personally I use Ente Auth on iOS and Aegis on Android. Both support backups to files (I back up to my own nextcloud) and imports from each other. I could just use Ente Auth on my android devices too, but I just prefer Aegis.