J7 I used 4 months.i personali fil it is a asowem bugaed smart phone.5.5 inch supper AMALOED HD display is verry good.easy to multitusking.it gameing perfomenc is very good, even hard gamaing.it camear is best in this price range.( f/1.9 aperture) .rear camera 13-megapixel with singel led flash.front camera very good , 5 megapixel.
It runs on android 5.1.1( lollipop) sumsung’s own UI on top.out of 1.5gb of RAM, you get 1.37 gb of usabale RAM, out of which about 575 MB RAM is free when the default apps running in the background.out of 16 gb internal storage, about 11.6GB OF storage is usable.you can also move compatibkle apps to the SD card.it is powered by an octa-core Exynos 7580 processor, instad of snapdragon 615 .