From time to time the rotation lock icon disappears from my quick settings. ( a wheel with the text indicator-rotation-lock appears instead)
A device reboot does not help here.
I know that some file has to be deleted in a cache or config folder to make it work again. Could someone point me to this ? Thank you !
the problem is also described here:
just an update: my battery went empty and after I booted the phone the indicator was back again. (problem gone) Not sure what solved it, maybe the toggle of the rotation lock switch in system settings followed by a reboot...