Battary drainage is fast i.e. 30% in 3 hours on standby mode After closing all apps and lock screen. It is very fast drainage. In other phones this much drainage occur when we playing some applications or multimedia. I am using Jio 4G network. It takes around 5 hours to full charge and drain in 10 hours while we are not doing any work on it. During charging it heatup upto 45-48℃ and during non charging its temperature around 38-42℃ always. If u will say that remove all apps they are draining your battary, then its not good because i buy this anroid for using apps not only for calls and sms. May be it's a OS issue. So plz try to slove it.