Samsung galaxy j7 is the best smartphone in Samsung galaxy series. Its 4g speed is unbelievable. Its colours are very good quality. Samsung galaxy j7 is easy to use. I bought Samsung galaxy j7 before 3 months ago and I realize that its performance is very. Its is very comfortable smartphone ever . It has many featurs like 16 gb internal mamory. Samsung galaxy j7 best part is 3000 mah battery. It available in 3 colours white, black and gold. It support microsd upto 128gb. It also a good feature. It has 1.5 gb ram that is neaver hanging. It supports 2g, 3g and 4g.