Xiaomi Redmi 4 (4X)

General Information

• Colors:
• Black, Gold

• Models:
• 2016060, 2016090, MAG138, MAE136

• SAR:
• 0.77 W/kg (head)     0.83 W/kg (body)    

• Price:
• About 110 EUR

Network/Bearer

• Technology:
• GSM / HSPA / LTE

• 2G bands:
• GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2

• 3G bands:
• HSDPA 850 / 900 / 1900 / 2100

• 4G bands:
• 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

Physical Specifications

• 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

• Single:
• 13 MP, f/2.0, PDAF

• Features:
• LED flash, HDR, panorama

• Video:
• 1080p@30fps

Selfie Camera

• Single:
• 5 MP, f/2.2

• Video:
• 1080p@30fps

Sound

• Loudspeaker:
• Yes

• 3.5mm jack:
• Yes, Active noise cancellation with dedicated mic

Connectivity

• 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

• Messaging:
• SMS(threaded view), MMS, Email, Push Email, IM

• Browser:
• HTML5

Battery

• Browser:
• HTML5, 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

Tests

• Performance:
• Basemark OS II: 946 / Basemark OS II 2.0: 832Basemark X: 7608

• Display:
• Contrast ratio: 915 (nominal), 2.920 (sunlight)

• Camera:
• Photo / Video

• Loudspeaker:
• Voice 64dB / Noise 70dB / Ring 72dB

• Audio quality:
• Noise -94.3dB / Crosstalk -94dB

• Battery life:
• Endurance rating 80h