Samsung galaxy j7 prime is my favorite one. basically it is a android phone. this phone was first launched in june 2015. this phone has a very good battery of 3000 mAh. snapdragon 615 processor give phone a very good computing power. and 1.5 GB ram helps to run the phone smoothly. two variation of this is 8 GB and 16 GB internal storage capacity. expandable memory up to 128 GB. 5 mega pixel of front and 13 mega pixel of rear camera with LED flash makes this a pritty cool gadget.