I just tried out Anbox and it seems to be quite unstable for me. As using apps like Whatsapp is really needed for me I unfortunately will have to revert to Android so I will mark this question as fixed.
However, I am quite impressed with Ubuntu Touch in general, keep up the good work! Once Anbox works reliably I might get back to it.
Couple of observations:
- In order to install UB I had first to revert to the original FP3 OS link as I had installed LineageOS before
- As specified on the phone page, adb and camera did not work
- SMS and mobile data worked with custom APN for internet
- USB connection through USB hub to phone and keyboard works
- HDMI connection to a monitor did not work for me
- mirscreencast through ssh works but with big latency
- Anbox was quite unstable, Whatsapp booted on a black screen and Signal booted but I could not set it up