Android phone phablet 4g smartphone series samsung galaxy samsung galaxy a display size 52 inch display resolution 1920 x 1080 pixels display resolution full hd display type super amoled touchscreen multitouch capacitive display properties scratch resistant display material gorilla glass 4 pixel density 424 ppi brightness 460 cdm ram 2 gb internal memory gb 16 gb max memory expansion 128 gb processor manufacturer samsung processor type exy