- That one uses an SDM845, while the Pixel 3a uses an SDM670. But there’s a Mobian port to that one anyway. Not sure in what state, anyway. You could flash it and find out.
- Camera is probably dead because not all the code has been written yet.
- My background is just playing with Linux since before I was a teen, but I did not know anything about porting to phones until early this year.
- I have some experience with postmarketOS, but more with Mobian as I am more of a Mobian person. I have more exprience with their docs and community than with postmarketOS itself. Many mobile Linux projects depend on the postmarketOS wiki, as they have the best source of information.
- Mobian installation is easy, just flash the images.
- Mobian documentation is somewhat lacking, but I want to improve on that once I’m less busy porting. Can’t do everything at once, of course.
I’m sure you can find another device that can run Linux. :)