Features of Xiaomi Redmi S2 General Network 4G VoLTE Dual SIM Yes Nano SIM No Touch-screen Yes Qwerty No Fingerprint Sensor Yes Display Pixel Density 269 ppi density Screen to body ratio 74.5% Color Reproduction 16M Colors Touchscreen Type Capacitive Touchscreen Screen Size 5.9 inch Screen Resolution 1440 X 720 pixels Display Type TFT-LCD Memory Internal Memory 64 GB External Memory 256 GB RAM 4 GB Camera Primary Camera 12 MP Secondary Camera 16 MP Primary Video Quality 1080 p Flash Yes Face Detection Yes Connectivity WIFI Yes Radio Yes GPRS Yes USB Yes OS OS Android OS Version Android 8.0 (Oreo) Processor Processor Type Octa Core Processor Speed 2 Ghz GPU Adreno 506 Battery Battery Type Li-ion Battery Capacity 3080 mAh Sound 3.5mm Jack Yes Loudspeaker Yes Body Height 160.7 mm Width 77.3 mm Thickness 8.1 mm Weight 170 g Type Bar