I have been using a Rephone (thanks to @Pingutux ) with SOFS, directly installed to the phone (not via SD card).
Compared to the VP22, which is still unlocked and SFOS runs only on the SD card, the Rephone works much better. Everything is smoother, faster and I have no real problems with the memory. On the VP22, SFOS is however at 4.4 while on the Rephone I have the latest 4.5.
On both phones, I have problem listing to music with any music app if the app was running when I had a call. The respect app has to be restarted.
What really does not work is taking videos on the rephone, this is really a pitty. It has been mentioned already, but is there really no way to make it work? How das Volla OS / Ubuntu Toch works with taking videos? Does anyone know?
I have sometimes the problem, that the FP sensor stops working. Only reboot helps.
Waydroid works nicely. I can use DKB and Ing DiBa banking apps (haven’t tested a transfer yet). However, after starting waydroid, SFOS is not able to get a GPS fix as the sensors might be blocked. This is known and should be fixed for waydroid on ubuntu touch
For a ported device, this works brilliant (waydroid does what I need) apart from taking videos.
A happy new year to all