Manufacturer    Xiaomi
Model    Redmi 3S
Network    2G bands: GSM 900 / 1800 / 1900 - SIM 1 & SIM 2
CDMA 800 / 1900
3G bands: HSDPA 850 / 1900 / 2100
TD-SCDMA
CDMA2000 1xEV-DO
4G bands: LTE band 1(2100), 3(1800), 7(2600), 38(2600), 39(1900), 40(2300), 41(2500)
Speed: HSPA, LTE, EV-DO Rev.A 3.1 Mbps
GPRS: Yes
EDGE: Yes
Dimensions    139.3 x 69.6 x 8.5 mm (5.48 x 2.74 x 0.33 in)
Weight    144 g (5.08 oz)
SIM    Dual SIM (Micro-SIM/Nano-SIM, dual stand-by)
Display type    IPS LCD capacitive touchscreen, 16M colors
Size    5.0 inches (~71.1% screen-to-body ratio)
Resolution    720 x 1280 pixels (~294 ppi pixel density)
OS    MIUI 7.3 (based on Android 6.0.1 Marshmallow)
Chipset    Qualcomm MSM8937 Snapdragon 430
CPU    Quad-core 1.4 GHz Cortex-A53 & quad-core 1.1 GHz Cortex-A53
GPU    Adreno 505
RAM    2 GB
Memory    16 GB
Card slot    microSD, up to 128 GB (uses SIM 2 slot)
Primary camera    13 MP, f/2.0, phase detection autofocus, LED flash
Features    Geo-tagging, touch focus, face/smile detection, HDR, panorama
Video    1080p@30fps
Secondary camera    5 MP, f/2.2, 1080p@30fps
WLAN    Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot
Bluetooth    v4.1, A2DP
GPS    Yes, with A-GPS, GLONASS, BDS
Infrared port    Yes
NFC    No
Radio    FM radio
USB    microUSB v2.0
Sensors    Fingerprint, accelerometer, gyro, proximity, compass
Battery    Non-removable Li-Ion 4100 mAh battery
Color    Silver
Package    1 x Phone
1 x Power adapter
1 x USB cable
1 x SIM needle
1 x User manual