I wanted to use it on my old tablet, but some guys reported the tablet got screwed and doest turn on. But I wanted to use it without internet connection as if I turn my old tablet on it will be kaput with the update that brokes it.
Anyway I used it in my Wiko bloom, but the kingroot sucks, I will have to uninstall it and replace it by superSU. This is because instead of getting better, the phone now wastes lot more battery than before rooting.
I have all apps OFF by greenify + DU battery and all apps to not launch on startup, but even though nothing is running and most system apps are even deactivated\uninstalled it is sucking more battery than before.