I like samsung galaxy series mostly because they give two sim card and sd card slot with better specification 13 M front and rear camera processor mediatek so this processor little hit mobile when play game with high ram. processor is 1.7 GHz approximetly and battery life, screen size 5.7 inch prity good to buy and service of samsung is good than other android manufacturer. Operating system is naughat 7.0 version so this is new version and may be upgradable to oreo too. So I suggest good phone to buy other than china product this is korea manufacturer.