Android phone 4g smartphone series samsung galaxy samsung galaxy j display size 45 inch display resolution 800 x 480 pixels display type super amoled touchscreen multitouch capacitive pixel density 245 ppi ram 1 gb internal memory gb 8 gb max memory expansion 128 gb processor manufacturer samsung processor type exynos 3475 processor core 4 cpu clock speed 13 ghz gpu mali t720 sim card micro sim memory cards microsd microsdhc microsdxc s