I think Google open-sourced their Cardboard stuff, but no idea if someone picked it up and continued to update it for newer Android releases.

Phone VR has been left in the past.

If only Samsung had made their gearvr not specific, single-phone sized.

You might be able to pick up an old phone that fits and a gearvr for cheap someplace. But I'm guessing by askinglooking for phone stuff, money is a factor here.

Most of the stuff on there was really, really bad, and almost immediately overheated the phone and drained the battery.