4g smartphone android phone phablet dual sim phone series samsung galaxy samsung galaxy j display size 5 inch display resolution 1280 x 720 pixels display resolution hd display type super amoled touchscreen multitouch capacitive pixel density 294 ppi ram 15 gb internal memory gb 8 gb max memory expansion 128 gb processor manufacturer spreadtrum processor type sc9830 processor core 4 cpu clock speed 15 ghz sim card micro sim memory cards