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Xiaomi Redmi 4 (4X)

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  Xiaomi Redmi 4 (4X)

Launch

Announced 2017, May
Status Available. Released 2017, May

Network

Technology GSM / HSPA / LTE
Speed HSPA 42.2/5.76 Mbps, LTE (2CA) Cat6 300/100 Mbps
2G bands GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G bands HSDPA 850 / 900 / 1900 / 2100
4G bands 1, 3, 5, 7, 8, 38, 39, 40, 41

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)
SIM Nano-SIM + Micro-SIM
Build Glass front (Gorilla Glass), aluminum back, aluminum frame, plastic ends

Display

Type IPS LCD
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 11
Chipset Qualcomm MSM8940 Snapdragon 435 (28 nm)
CPU Octa-core 1.4 GHz Cortex-A53
GPU Adreno 505

Memory

Card Slot microSDXC (uses shared SIM slot)
Internal 16GB 2GB RAM, 16GB 3GB RAM, 32GB 3GB RAM, 64GB 3GB RAM, 64GB 4GB RAM
eMMC 5.1

Sound

Loudspeaker Yes
3.5mm Jack Yes

Comms

WLAN Wi-Fi 802.11 b/g/n, Wi-Fi Direct
Bluetooth 4.2, A2DP, LE
NFC No
Radio FM radio
USB microUSB 2.0
Positioning GPS, GLONASS, BDS
Infrared port Yes

Features

Sensors Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass

Battery

Stand-by Up to 432 h (3G)
Talk time Up to 36 h (3G)
Music play Up to 87 h
Type Li-Po 4100 mAh, non-removable

Misc

Colors Black, Gold
Models 2016060, 2016090, MAG138, MAE136, Redmi 4, Redmi 4X
SAR 0.77 W/kg (head) 0.83 W/kg (body)
Price About 110 EUR

Main Camera

Features LED flash, HDR, panorama
Video 1080p@30fps
Single 13 MP, f/2.0, PDAF

Selfie camera

Single 5 MP, f/2.2
Video 1080p@30fps

Tests

Performance GeekBench: 1819 (v4.4) GFXBench: 5.1fps (ES 3.1 onscreen)
Display Contrast ratio: 915 (nominal), 2.920 (sunlight)
Camera Photo / Video
Loudspeaker Voice 64dB / Noise 70dB / Ring 72dB
Battery (old) Endurance rating 80h
Audio quality Noise -94.3dB / Crosstalk -94dB