Hello,
I'm using this xiaomi mobile 1 year ago.
This smart phone is very nice, in my family's be all using xiaomi redmi note 4 phone. When be play big game like 2GB or 3GB Ram, it's work proper and smooth, it will be never hang in middle of game, but normal heat comes.
I just love this smartphone I hope this mobile bery useful for you.
It's battery backup 4500 mh
Android masdragon
And some more future are available in this smartphone, I think this mobile is only of gaming because it work proper in gaming