IT WORKED - finally I'M IN!!!!
Installing the prebuilt images with fastboot failed, but resorting to pmbootstrap worked - so now I have a #oneplus6T phone with #postmarketos and #plasmamobile 6 on it.
I did order a simcard for it, but I haven't gotten that yet, so testing calls and sms must wait a few days.
How ever lots of things works - I can browse the internet with angelfish, look at photos, connect to bluetooth devices, record sound, play music, use KDE Connect, set alarms and use timers, view PDFs, use the shell and more ...
i can't use #tokodon (it freezes when trying to log in), so this is posted from my laptop, and my #nextcloud account configured in the plasmamobile settings does not work - no contacts or calendar events that way, or browsing files for that matter. #Okular shows a meaningful error message regarding files: webdavs:// fails. Not sure why #akonadi fails.
#fossphone #linuxphone - the future looks bright :) #linux #kde