Hello friends I am using this phone since 2weeks Micromax evok power .in this phone long lasting non removable battery and phone battery life is 4000 mAh and best battery backup and phone have 2 GB RAM and 16 GB internal memory and style and disign of this phone is very good & camery clearty is good and all features get in lowest price &this phone under is specific range my openion this phone is very nice for a middle family