Redmi is known for selling phones with trending technalogy for a reasonable price Redmi 3s prime is a phone like that in this phone redmi has given a 3 GB ram and quad core snapdragon processer and it is the only phone under range of 9000 which has finger print sensor that is the main attraction among all the people of every categary. It has a display of 5 inch and it has a average camera 13 MP but the camera is satisfying the most of the users but it has a great advantage from other phones due to 4140mAh battery which gives u two days non stop enjoyment .it has internal of 16 GB which can be expand till to 128 by micro sd.it can run dual sim but it has hybrid slot that is the big disadvantage for this phone due to hybrid most of the people are not choosing this.it has Marshmallow android system which is good overall if u want a phone with latest trending technalogy get redmi 3s prime whose price is reasonable .