4g smartphone series blackberry 10 display size 31 inch display resolution 720 x 720 pixels display type tft touchscreen capacitive pixel density 328 ppi ram 2 gb internal memory gb 8 gb max memory expansion 32 gb processor manufacturer qualcomm processor type snapdragon s4 processor core 2 cpu clock speed 12 ghz sim card micro sim memory cards microsd microsdhc sensors accelerometer g sensor gyroscope sensor light sensor proximity senso