Orbot on Fairphone
Orbot on Fairphone behaves weird which blocks using it.
When installed (with root access) and started, the default screen just flashes all the time, not/barely interacting with user input. Anyway, one can not start the functionality.
Orbot ... 0.2.3.23-rc.1.0.11-RC5-test2 from F-Droid
F-Droid ... 0.58
Fairphone ... Front end 1.1 "Caju"
Android ... 4.2.2 based on kernel 3.4.5