4g smartphone phablet android phone series samsung galaxy j samsung galaxy display size 55 inch display resolution 1280 x 720 pixels display resolution hd display type super amoled touchscreen multitouch capacitive pixel density 267 ppi display colour 16 million ram 2 gb internal memory gb 16 gb max memory expansion 128 gb processor manufacturer samsung processor type exynos 7870 processor core 8 cpu clock speed 16 ghz gpu mali t830 mp2