Android phone dual sim phone 4g smartphone series asus zenfone display size 52 inch display resolution 1280 x 720 pixels display resolution hd display type ips touchscreen multitouch capacitive display characteristics 25d glass display brightness 400 cdm ram 3 gb internal memory gb 32 gb max memory expansion 32 gb processor manufacturer mediatek processor core 4 gpu mali t720 dual sim technique dual sim standby sim cards nano sim micro