I tried LineageOS 15 and EmteriaOS (Android 7.1) on my Pi 3B+. LineageOS was quite slow, kept freezing, and seemed to not have the right drivers to work with my Pi (it clearly said on the download page that the LineageOS 15 build was a beta and not meant for daily use, but I had to use it because v14 didn't boot on my 3B+). Emteria (free version) was much faster and didn't crash, but still seemed to slow down/freeze now and then and wasn't able to run more than about 3 apps at once (like the RAM had filled up).
So it is definitely good for running many different Android apps, on a big screen and with keyboard&mouse inputs. It is just not so suitable for daily use yet.
BTW, KonstaKANG's website says that it is possible to install the TWRP recovery s/w into the LineageOS build, but I coudn't find / figure out how to. Does anybody here know how to?
I'm setting up a webpage and email server on a Pi 3B+ running Ubuntu Mate 18.10.
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