Battery back up of this phone is very good.if you charge this phone once and use economically like watching some videos or surfing internet then it will definetly run for 1 or 1.5 day.so good battery back up screen size is good easy to handle I really like camera quality of this phone but as it is a chinese product you have handle it very carefully if you drop this phone once then problem start coming some times in charging sometimes your headphone jack did not work so phone is no doubt very good in this range but if you handle it carefully especially after warranty is over