Hey friends I am using lenovo k6 power smartphone.This smartphone battery backup is very good and camera is nice.I am using this mobile 4 to 5 month it’s work fine no lags no hang.This mobile build quality is realy very good.mobile work very fast.You are gaming lover buy this smartphone no hang no lags.This mobile sound is pretty good very clear sound.But this mobile fingerprint not perfectly work.mobile display is very good display.no heat problem.This mobile is best mobile buy now from flipkart.