Fairphone 2 phone app
A few weeks ago my Fairphone 2 with UBports (Android 7 / 19.11.2) crashed completely.
Even UBports Recovery did not start anymore.
So I flashed Android 7 (19.11.2) and then installed UBports (an older than Installer 0.8.8-beta).
With this installation I was able to make active phone calls, but not to accept phone calls.
Even after reinstalling Android 7 (19.11.2.) and UBPorts (Installer 0.8.8-beta) the problem persisted.
Therefore I flashed Android 9 (21.03.0) and again UBports (Installer 0.8.8-beta). Unfortunately the problem persisted. I flashed Android 7 (19.11.2.) Again and tested whether I can accept calls with it. I repeated the test with Android 9 (21.03.0).
With both Android versions, I was able to answer phone calls without any problems.
I haven't found a way to install UBports so that I can take phone calls. I tested all offered channels.
Did I do something wrong?