XIAOMI REDMI 3S PRIME is a very good smart phone with android v 6.0.1(Marshmallow) OS with very affordable price RS 8999. It has a very attractive look with HD revolution(720 . 1280 pixles) IPS Display with attractive colours Grey, Gold, Silver. Easy to Multitasking with Octa-core 1.4GHz Cortex-A53 CPU, 3GB RAM and 32GB ROM. 5.0 inches(~71.1% screen-to-body ratio) display with IPS LCD capacitive touchscreen. A 13MP, face detection autofocus primary camera with LED flash and 5MP front camera. GSM/HSPD/LTE networks. With a long standby 4100 mAh Li-lon non-removabale battery. With 0.62 W/kg(head), 0.43 W/kg weight with Fingerprint, accelerometer, gyro, proximity, compass like attractive sensors. and a very good sound quality.