Downgraded from 8.0.5 back to 7.5.4 due to strange battery behaviour. Charging was a problem back then, checked via Ampere, only 350mA max (but same cable and plug does up to 1800mA in 7.5.4) . My data network too seems too slow, H+ will show no bar at all. Thinked that 7.5.4 will gonna stick in for a while with this mi4c until a bug-free miui8 come up.