Samsung galaxy j7 prime is one of the best mobile .it is a single sim or dual sim.it is lollipop version based on angular os .it occupies internal space 16gb .camera and picture quality is very nice.it graphics representation is also nice it is very scalable to use.it has sensors in its feature s.and movies also it shows in hd quality .it is very easy to play to games in it .it is an 4g mobile which can be easily access through internet.it is very scalable to use.