4g smartphone rugged smartphone android phone series samsung galaxy samsung galaxy xcover display size 45 inch display resolution 800 x 480 pixels display type tft touchscreen multitouch pixel density 20732 ppi ram 15 gb internal memory gb 8 gb max memory expansion 64 gb processor manufacturer marvell processor type pxa1908 processor core 2 cpu clock speed 12 ghz memory cards microsd microsdhc microsdxc sensors accelerometer g sensor pr