No.1 M2 Rugged Smartphone - 4.5 Inch Screen, IP68, Quad Core CPU, 1GB RAM, Android 4.4, Dual SIM, Micro SD Card Slot (Black) The No.1 M2 Rugged Smartphone with a Quad Core CPU, 1GB RAM and a has a 4.5 inch screen has Dual SIM, Android 4.4 and micro SD card slot. 6941377708356 4 Inch Android Phones Android Phones No.1 M2 Rugged Smartphone (Black)