Xiaomi Mi 4 specification and features

Network
Technology GSM / CDMA / HSPA / EVDO / LTE
2G bands GSM 850 / 900 / 1800 / 1900 – all versions
  CDMA 800 / 1900 – Telecom 3G model
3G bands TD-SCDMA – 4G model
  HSDPA 850 / 900 / 1900 / 2100 – Unicom 3G model, Telecom 3G model
  CDMA2000 1xEV-DO – Telecom 3G model
4G bands 38, 39, 40 – 4G model
Speed HSPA 42.2/5.76 Mbps, LTE, EV-DO Rev.A 3.1 Mbps
GPRS Yes
EDGE Yes
Launch
Announced 2014, July. Released 2014, August
Status Discontinued
Body
Dimensions 139.2 x 68.5 x 8.9 mm (5.48 x 2.70 x 0.35 in)
Weight 149 g (5.26 oz)
Build Glass front, plastic back, aluminum frame
SIM Micro-SIM
Display
Type IPS LCD capacitive touchscreen, 16M colors
Size 5.0 inches, 68.9 cm2 (~72.3% screen-to-body ratio)
Resolution 1080 x 1920 pixels, 16:9 ratio (~441 ppi density)
Platform
OS Android 4.4.3 (KitKat), upgradable to 6.0.1 (Marshmallow), MIUI 10
Chipset Qualcomm MSM8974AC Snapdragon 801 (28 nm)
CPU Quad-core 2.5 GHz Krait 400
GPU Adreno 330
Memory
Card slot No
Internal 16GB 2GB RAM, 64GB 3GB RAM
  eMMC 5.0
Main Camera
Single 13 MP, f/1.8, 1/3.1″, 1.12µm, AF
Features LED flash, panorama, HDR
Video 4K@30fps, 1080p@30fps, 720p@120fps, HDR
Selfie camera
Single 8 MP, f/1.8
Video 1080p@30fps
Sound
Loudspeaker Yes
3.5mm jack Yes
Comms
WLAN Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, DLNA, hotspot
Bluetooth 4.0, A2DP
GPS Yes, with A-GPS, GLONASS, BDS
Infrared port Yes
Radio FM radio
USB microUSB 2.0, USB On-The-Go
Features
Sensors Accelerometer, gyro, proximity, compass, barometer
Battery
  Non-removable Li-Ion 3080 mAh battery
Charging Fast charging 18W
Quick Charge 2.0
Stand-by Up to 280 h (3G)
Misc
Colors Black, White
Models 2014215
SAR 0.71 W/kg (head)     0.85 W/kg (body)    
Tests
Display Contrast ratio: 929 (nominal), 2.424 (sunlight)
Camera Photo / Video
Loudspeaker Voice 62dB / Noise 62dB / Ring 66dB

Audio quality Noise -91.6dB / Crosstalk -49.7dB
Battery life
Endurance rating 68h
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