Since 10 days I have been using. would like to share my experiences with this battery saving monster.Huge 4000mAh battery ideal for who hates frequent charging.Power saver button helps in low battery conditions. 15% given 7 hours stand by.camera is also very good both front and rear.please remove rear camera protected cover from lense otherwise blured pics will come.many have write camera quality low. but it is very good in this price segment.may be they forgot to remove it.It having 2GB RAM| 16GB ROM.Finally I am happy with this product.