j7 prime model no. J610F was launched in 2016 before A7 2017 but J7 prime now running on samsung ui 9.5 aka android version 8.1 oreo but A7 still has 9.0 samsung UI. why ?
j7 J610F prime was launched before A7 2017 but now J7 prime now running on samsung ui 9.5 aka android version 8.1 oreo but A7 still has 9.0 samsung UI. why ?