Xiaomi unveils Mi MIX 4 with under-screen camera, Snapdragon 888+ SoC

Xiaomi has officially unveiled its latest MI MIX 4 smartphone in China. It is latest member in its MIX series and offers premium specifications and features.

The MI MIX 4 specs include 6.67-inch 3D curved AMOLED display which offers 10-bit TrueColor. Its screen offers FHD+ resolution and has support for 120Hz refresh rate, 480Hz touch sampling rate, HDR10+ and Dolby Vision. For added durability, phone’s screen has Corning Gorilla Glass Victus protection on top.

Most talked about feature of MI MIX 4 is its 20MP under-display front camera. Even though, the selfie camera is placed inside screen, its images retain true colors and details, thanks to its 400ppi viewing in camera zone, similar pixel density and brightness of screen.

Xiaomi’s in-display camera leverages CUP technology which reduces light diffraction with special circuit design, new transparent curved wiring Indium Tin Oxide (ITO) material and other imaging algorithms.

The Xiaomi MIX 4 is also first mobile phone powered by Snapdragon 888 Plus chipset. It has new heat dissipation structure having a combined surface area of 11588mm² to keep thermals in check. Depending on model, smartphone comes in options of 8GB/12GB RAM with 128GB/256GB/512GB storage options.

With thickness of just 8.02 mm, the MI MIX 4 packs in 4500mAh battery inside. It has support for 120W wired and 50W wireless fast charging. With wired charging, Xiaomi says that handset charges from 0 to 100% in just 15 minutes and with wireless charging, it takes just about 28 minutes.

Additionally, Xiaomi adds that maximum rear temperature when doing wired charging will be 37°C. It is done with intelligent fast charging modulation algorithm, which manages charging speed and temperature in different scenarios. This algorithm results in increase of battery charging cycles by up to 25%.

The MI MIX 4 packs in 108MP (main) + 13MP (ultra-wide) + 8MP (periscope) cameras at back. Primary shooter has Samsung HMX sensor with 4-in-1 super pixel binning and OIS. The ultra-wide angle shooter comes with optical free-form lens. Periscope lens offers 50X digital zoom and 5X optical zoom.

To ensure optimum network coverage, the MIX 4 has unique interior metal case as an antenna amplifier. It has 19- antennas built-inside with signal quality optimizations for 8 scenarios. It automatically detects environment, optimize network configurations and allows manual location entry to enhance signal quality in traffic areas.

Xiaomi MI MIX 4 specifications

Dimensions: 162.65 x 75.35 x 8.02 mm
Weight: 225 grams
SIM: Dual Nano SIM slots
Operating system: Android 11 based MIUI 12.5
Biometrics: In-display fingerprint sensor
Display: 6.67-inch micro-curved Flexible AMOLED display with 2400 x 1080 pixels resolution, 20:9 aspect ratio, up to 120Hz refresh rate, up to 480Hz touch sampling rate, 10-bit colors, HDR10+, Dolby Vision, DCI-P3 colors, 5000000:1 contrast ratio, 800nits brightness, multi-touch support, Corning Gorilla Glass Victus protection
Chipset: Octa-core Snapdragon 888+ mobile platform with Adreno 660 GPU
RAM with Storage:
- 8GB LPDDR5 RAM with 128GB / 256GB UFS 3.1 storage
- 12GB LPDDR5 RAM with 256GB / 512GB UFS 3.1 storage
Front camera: 20MP ultra-pixel under-display camera with 4-in-1 Super Pixel at 1.6um pixel size, 1080p at 30fps
Rear cameras: Triple cameras with LED Flash, 8K video at 24fps, 4K video at 30/60fps, 1080p at 30/60fps, slow motion video at 120/480fps
- 108MP main with 1/1.33-inch Samsung HMX sensor, F/1.95 aperture, 7P lens, OIS, 4-in-1 Super pixel at 1.6um pixel size, 24mm focal length, 100x zoom
- 13MP ultra-wide with 120-degree FOV, F/2.2 Aperture, 12mm focal length
- 8MP periscope-telephoto with 120mm focal length, 50X digital zoom, 5X optical zoom, OIS
Battery: 4500mAh (typical) built-in graphene-based Lithium-ion battery. Supports 120W wired fast charging, 50W wireless charging, 10W wireless reverse charging. Also supports QC4 / QC3+ / PD 3.0 fast charging protocols
Connectivity: 5G (SA/NSA) Dual mode / Dual 4G VOLTE, Wi-Fi 6e 802.11 a/b/g/n/ac/ax, Wi-Fi Hotspot, Dual Band (2.4/5GHz) 2x2MIMO / 8×8 MU-MIMO, Wi-Fi Direct, Miracast, Bluetooth V5.2, USB Type-C, UWB, NFC, Dual Band GPS/GLONASS/Beidou/Galileo/QZSS/NavIC
Sensors: Ultrasonic distance, Ambient light, Acceleration, Gyroscope, E-Compass, Hall, X-axis linear motor, Infrared Remote control, Barometer, Back Light (color temperature), Flicker, Laser Focus

The Xiaomi MI MIX4 has Ceramic White, Ceramic Grey and Ceramic Black colors. It is already available for order and will start selling in China from August 16th.