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Xiaomi Redmi 4 (4X)

Xiaomi Redmi 4 (4X)
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Xiaomi Redmi 4 (4X)

Network
Technology GSM / HSPA / LTE
2G bands GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G Network HSDPA 850 / 900 / 1900 / 2100
4G Network LTE band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 38(2600), 39(1900), 40(2300), 41(2500)
Speed HSPA 42.2/5.76 Mbps, LTE-A (2CA) Cat6 300/100 Mbps
Launch
Announced 2017, May
Status Available. Released 2017, May
Body
Dimensions 139.2 x 70 x 8.7 mm (5.48 x 2.76 x 0.34 in)
Weight 150 g (5.29 oz)
Build Front glass, aluminum body
SIM Hybrid Dual SIM (Nano-SIM/ Micro-SIM, dual stand-by)
Display
Type IPS LCD capacitive touchscreen, 16M colors
Size 5.0 inches, 68.9 cm2 (~70.7% screen-to-body ratio)
Resolution 720 x 1280 pixels, 16:9 ratio (~294 ppi density)
Protection Corning Gorilla Glass (unspecified version)
Platform
OS Android 6.0.1 (Marshmallow), upgradable to 7.1.2 (Nougat); MIUI 10
Chipset Qualcomm MSM8940 Snapdragon 435 (28 nm)
CPU Octa-core 1.4 GHz Cortex-A53
GPU Adreno 505
Memory
Card slot microSD, up to 128 GB (uses shared SIM slot)
Internal 16GB 2GB RAM, 32GB 3GB RAM, 64GB 4GB RAM
Main Camera
Modules 13 MP, f/2.0, PDAF
Features LED flash, HDR, panorama
Video 1080p@30fps
Selfie Camera
Modules 5 MP, f/2.2
Video 1080p@30fps
Sound
Loudspeaker Yes
3.5mm jack Yes
 Active noise cancellation with dedicated mic
Comms
WLAN Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot
Bluetooth 4.2, A2DP, LE
GPS Yes, with A-GPS, GLONASS, BDS
Infrared port Yes
Radio FM radio
USB microUSB 2.0
Features
Sensors Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass
Battery
  Non-removable Li-Po 4100 mAh battery
Stand-by Up to 432 h (3G)
Talk time Up to 36 h (3G)
Music play Up to 87 h
Misc
Colors Black, Gold
SAR 0.77 W/kg (head)     0.83 W/kg (body)    
Price About 110 EUR
Tests
Performance Basemark OS II: 946 / Basemark OS II 2.0: 832
Basemark X: 7608
Display Contrast ratio: 915 (nominal), 2.920 (sunlight)
Loudspeaker Voice 64dB, noise 70dB, ring 72dB
Audio quality Noise -94.3dB / Crosstalk -94dB
Battery life Endurance rating 80h

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