Samsung galaxy j series consists of many phones but most of trending of them is J5-6 because of its cool features and reasonable price. People prefer J5 over J3 and J7 is besause of its balance between both phones. It has more features than J3 and is cheaper than J7. The only difference between J5 and J7 is memory. J5 have 8gb where as J7 have 16gb.
