I bought this redmi not 4 .6 month. I regular use redmi not4 no battery heat.Redmi not 4 provie good feauters. Battery-4100mah which is among the maximum available in the market.Redmi not 4 long time battery use.Charger is not fast charging. Display. 5.5 Lcd full hd display it gives Hd 1920 by 1080 pixel resolution in which is the part in the display. All games and videos very clear at any angle. Camera _ 13 mega pixel real camera and 8 mega pixel front camera .You can take high clarity pictures. 2Ghz octa core shapdragon 625 processor and the Android version 6.0 and the update latest version 7.0 nougat .My bad opinion one can use Dual SIM containing both microsim and nano sim. The sound quality is very beautiful .phone price 12999 .Redmi product is amazing