Or Microsoft.

Stay as far away from BigIT as you can. Linux or BSD are there for many good reasons. This is another one.

Other than Android, what viable Linux options exist for mobile devices?

What is your definition of viable in this context?

Can run the Android or iOS apps people need for banking, shopping, flights, payment, parking, etc

What we want is probably platform agnostic PWAs that will run on any device with a browser.

We will never have freedom as long as were forced to choose between Google and Apple walled gardens.

	▲	immibis 2 days ago \| parent [-]
		The whole purpose of these apps is to only run on certain specified devices, so PWA won't work.