Can unfortunately not confirm any functionality, but I had Ubuntu touch installed before, it is still running android underneath and even though it was working okayish, I still went back to LineageOS at the time and GrapheneOS now. Ubuntu touch is not a "true/full" Linux OS like the PinePhone OSs.
Linux Phones
Community about running GNU/Linux on phones. Projects like Ubuntu Touch, Plasma Mobile, PostmarketOS, Mobian etc. Either on former Android phones or hardware like the PinePhone.
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it is still running android underneath
Oh really? I wasn't aware. That's a bit of a letdown: I wanted to ditch Android altogether.
Then again, I suppose if the camera works, it must have something to do with running atop a working Android system.
I'll look into all this. Thanks for the heads up!
If I remember correctly that is exactly why I ditched it. I was really disappointed because I bought a new smartphone specifically for it. Thankfully that phone also supported LineageOS.
Ubuntu touch (...) is still running android underneath
I remember this from years ago, but forgot the details - you mean more so than just the Android kernel+blobs?
I am not sure, but when I used it years ago it booted a LineageOS core first.
I think ypu are mixing things up. Ubuntu Touch is indeed halium based and thus uses Android kernel versions and device drivers, which makes it realatively easy to port but comes with the similar update issues as Android.
On top of that OS there is the Waydroid app that boots a LinageOS in a container and allows you to run Android apps.
The devices overview doesn't go into so much detail: https://devices.ubuntu-touch.io/device/fp4/
Probably best to ask on the UT forums directly.