As with yesterdays Fairphone OS release 2019.02.1, so far, but after only barely half a day of uptime of the rebooted fairphone2, my gut feeling is, that wifi stability, wifi reconnection and wifi connection to public wifi places seems to be much better than with still the initial Android7 release from October 2018.
this is my experience so far. Fairphone2 wakes up quickly, seems to be better performing overall as well, but maybe it is only due to the fresh reboot. Usually I have very long uptimes and never shut down or boot the phone.
We will see. Keeping my fingers crossed.