Highlights:
- Qualcomm Snapdragon 625, first in its class with 14nm FinFET architecture for best-in-class, unprecedented thermal performance and unbeatable power efficiency- which is 20% more power efficient that the Redmi Note 3.- The New King of Battery: 4100 mAh- Incredibly slim and sleek, measuring 5mm at its thinnest point and designed for a comfortable hand feel with its tapered edges and 2.5D curved glass
- 5.5 inch Full HD display
- Adreno 506 GPU
- 13MP CMOS rear camera with PDAF, f/2.0 aperture, BSI (1.12 micron pixels); 5MP, f/2.0 aperture front camera
- Dual SIM, dual standby (nano and micro SIM)
- LTE
- Rear fingerprint sensor
- MIUI 8 
- International ROM
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Manufacturer
Xiaomi
Model
Redmi Note 4X
Network
GSM B2/B3/B5/B8
WCDMA B1/B2/B5/B8
TD-SCDMA B34/B39
CDMA2000/1X BC0
FDD-LTE B1/B3/B5/B7
TD-LTE B38/B39/B40/B41(2555-2655MHz)
Dimensions
151×76.3×8.45 mm (5.95×3.0×0.33 in)
Weight
165 g (5.82 oz)
SIM
Dual SIM (Nano-SIM, dual stand-by)
Display type
IPS LCD capacitive touchscreen, 16M colors
Size
5.5 inches (~72.3% screen-to-body-ratio)
Resolution
1080×1920 pixels (~401 ppi Pixel Density)
OS
MIUI 8.0 (based on Android 6.0 Marshmallow)
Chipset
Qualcomm MSM8953 Snapdragon 625
CPU
Octa Core 2 GHz Cortex-A53
GPU
Adreno 506, (650 MHz)
RAM
3 GB dual-channel
Memory
32 GB
Card slot
Uses Sim 2 Slot
Primary camera
13 MP, f/2.0, phase detection autofocus, dual-LED (dual tone) flash 4128×3096 Pixels
Features
PDAF Sensor, Gesture Shot, Voice Capture, Face Beauty, Burst Mode, HDR, Smile detection, Face Detection, Self-timer
Touch focus, Low Light Mode, Manual Mode, F2.0 Aperture,5P lens
Video
1080p 30 FPS (Slow Motion Video 720p@120 fps)
Secondary camera
5 MP, f/2.0, 85 Degree Wide Angle
WLAN
Wi-Fi 802.11 b/g/n, Wi-Fi Direct, WiFi Display, Dual Band (2.4 GHz + 5GHz)
Bluetooth
v4.2, With HID
GPS
Yes, with A-GPS support, GLONASS, BeiDou
Infrared port
Yes, Remote Control Mode
NFC
No
Radio
Yes
USB
MicroUSB v2.0
Sensors
Fingerprint, accelerometer, gyro, proximity, compass, barometer
Battery
Non-removable Li-Po 4100 mAh battery
Color
Black
Package
1 x Phone
1 x Power adapter
1 x USB cable
1 x SIM needle
1 x User manual