Dear Fairphone developers, dear FP community,
thank you so much for bringing forth this upgrade to Android 9. A really big achievement that, once more, shows the FP’s genuineness of reaching longevity and sustainability.
Although Android 7 satisfies my needs, I am curious about upgrading to 9 soon.
As already asked in this question on mouse-functionality in Android 6 and in this question on mouse-functionality in Android 7, I would like to know, whether the FP2 can still be operated with a mouse after the Android 9 update. I don’t dare to update, before I can be sure that Android 9 on FP2 supports this mouse-functionality. 
To check, whether mouse-functionality is integrated in your Android 9-running FP2, you just have to connect a usual mouse via a USB-to-Micro-USB-adapted to the FP2’s micro-USB-port. Then, either a mouse cursor appears on the screen and can be controlled via the mouse (in this case mouse-functionality is available) or nothing happens (in this case mouse-functionality is not included in Android 9).
It would be great if either the developers or some FP2-users could give me feedback concerning the above stated question!