I thik samsung j7 best phone in a buget hight display. And also size are very good. Is 14000 we have all thing 2015 verion samsung j7 can also upgrade marsmallo. Best qualites of samsung phone are their display qualities. Sometimes samsung phone are hang bt now this j series cannot be hanged. I have 3 samsung j7. Samsung j7 . Samsung j7 prime. Samsung j7 2016. In the buget its awesome phone ever.J7 prime and On7 is almost same.
but you will get Fast Charging on On7. J7 prime has no fast charging support.
and you will get Snapdragon 625 on On7 which is more faster than Exynos 7870.samsung on7 in my way not good . I m not satisfied this phone