Brand: Xiaomi Model: Redmi S2 Memory: 4GB RAM + 64GB ROM Display Size: 5.9 inches IPS LCD Camera: 12MP+5MP Primary, 16MP Secondary Battery Power: 3080mAh Non-removable Li-Po battery Memory Card Slot: Micro-SD expandable upto 256GB SIM Type: Hybrid Dual SIM (nano + nano / microSD) Display Resolution: 720 x 1440 pixels HD+ Network Type: Dual 4G VoLTE, 3G, 2G, GSM, WCDMA Dimensions: 160.7 x 77.3 x 8.1 mm Operating System: Android 8.1 (Oreo) Sensors: Fingerprint Scanner, Accelerometer, Proximity, Compass, Gyroscope Chipset: Qualcomm Snapdragon 625, up to 2.0 GHz, Adreno 506 1 Year Warranty