Android phone 4g smartphone series samsung galaxy samsung galaxy a display size 45 inch display resolution 960 x 540 pixels display resolution qhd display type super amoled touchscreen multitouch capacitive pixel density 24477 ppi ram 15 gb internal memory gb 16 gb max memory expansion 64 gb processor core 4 cpu clock speed 12 ghz gpu adreno 306 memory cards microsd microsdhc microsdxc sensors accelerometer g sensor light sensor proxim