@UbuntuGal said in Ubuntu Touch on Samsung Galaxy S10+:

Can Ubuntu Touch be installed on a Samsung Galaxy S10+ (Exynos) phone?

Yes-but-no. There was a port, but it's outdated and the porter has abandoned it. You can find the information here:
https://devices.ubuntu-touch.io/device/beyond2lte/release/xenial/

Can a Samsung Galaxy S10+ phone with Ubuntu Touch use VoLTE 4G?

No. Ubuntu Touch does not yet support VoLTE on any device (with a tiny number of exceptions).

Now I'm going to move this topic, because it's not about Waydroid. Welcome, by the way, and sorry that I don't have better news!