As far as I remember, 6.7.21 was quite good in keeping battery alive. 6.8.11 is also affected by battery drain.
Good to hear that, I thought that it's only my phone causing stories with battery.
It won't be back due to Google policy. From now on you have to install root manually on every device.
Wysłane z mojego Redmi Note 2 przy użyciu Tapatalka
If you don't know what root is, how to install it, why do you want to have it? Root is for advanced users only, for normal users root is not necessary.
Wysłane z mojego Redmi Note 2 przy użyciu Tapatalka