I using Samsung Galaxy j7 ( 2015) . It's just a amazing phone. Works smoothly without any hang. Ram is not enough( 1.5 gb ram) but for octa core processor, the phone can handle any big size of app/games. I used this phone roughly but I never noticed any problem, because of samsung exynos processor's works super fast. Battery back up also good and the plus point is it has selfie flash.although the selfie flash is single flash but it's really good. At 15000 thousand, it's a great phone. I suggest this phone for all roughly user or gamers.