Incredible job, thanks a lot to everyone that help in any way, and a special bravo to @chrmhoffmann!
Installed through Twrp, I just formatted system, Dalvik and cache, installed the zip, installed gapps and SU, rebooted and everything is perfectly working 
No need for reinstalling apps or anything, excellent!
No. The first builds of lineage for FP2 had a problem with the lineage updater. That’s why they have been removed from download. The new build should not have the problem anymore. People who have downloaded and installed the first builds have to install the updates manually through twrp recovery. It should work now. Please report back!.
Chris
Does anyone else how has SIM lock experience this problem as well?
Chris
This is not related to fairphone FP2 lineage 16, but rather a generic android 9 feedback. Maybe this should be discussed elsewhere.
Chris
Yes, sometines, i don’t have the SIM unlock screen for a few minutes, but eventually, it will prompt after 10 minutes max.
The on/off of the screen seems to work as well. I’ll try to have a look at the logs.
It’s on a fresh install of Lineage for MicroG (version of last Monday). I’ll update it and keep you updated 
Upgrade went smooth and LineageOS 16.0 works well here too. Thanks @chrmhoffmann!
But - like with LineageOS 15.1 - Netguard still doesn’t work.
Hi, upgraded yesterday and everything is working brilliantly.
The only bug I’ve found is that if I longpress on the homescreen and select wallpaper, I get the message ‘app not installed’. It’s there in the app drawer, and I’m able to open the app and change the wallpaper that way.
Another bug: If the alarm clock is at level one, it will not be heard.
Only at level two you hear the alarm.
Hi. I installed XPosed for Android 9 from here https://magiskroot.net/download-xposed-for-android-pie/ and GravityBox from here https://forum.xda-developers.com/xposed/modules/app-gravitybox-v9-0-0-beta-1-android-9-t3908768
Hello, I installed from scratch LineageOS 16 (with microG) following these instructions https://wiki.lineageos.org/devices/FP2/install . I also installed Magisk because I need hide feature for my banking app. Until now just one problem : voice synthetiser seems no working. Thanks for the job!
Could be, that the Pico TTS is missing in LOS 16 (Look at this Post and this one). So if you need TTS now, you have to install a TTS App (like the on from Google).
Does the Lineage Updater work now?
Chris
I re-installed LineageOS from scratch earlier today and the first thing I did after booting was try the Updater. I was able to download today’s update then, was led to TWRP to install though. Don’t know if it’s supposed to work this way, but the update succeeded.
Thanks!
Yes, looks good!
Chris
Yes, installed the update via updater.
Yes, the updater works now…Thanks!!!
Chris, do you still want to watch the alarm clock and its volume bug?
Steven
Similar behaviour here as well: after rebooting the phone, it often takes a little while until the SIM unlock prompt is displayed. Sometimes, screen lock/unlock helps, but this did not always do the trick here.
Also, the mobile network connection is not available accordingly, I thus deactivated the SIM lock for now.
Yeah, for me the problem is aging 
I just noticed that while charging (regardless of via computer or wall socket), the display won’t completely black out. It will dim down after like 53-54 seconds, but won’t turn all black.
Once I disconnect the charging cable, the display will black out after a minute, just as set in the settings.
Other (chosen) settings: Flight mode activated, automatic display brightness
Has anyone else experienced this? Is it normal?