Xiaomi today officially launched Xiaomi MIX 4, the latest generation of its boundary-defying MIX series, at Xiaomi’s Autumn 2021 New Product Launch. Xiaomi MIX 4 showcases the ultimate full screen display with the latest CUP (Camera Under Panel) technology, complete with an all new lightweight fine ceramic unibody. Xiaomi MIX 4 also features “Point to Connect” Ultra Wide Band – UWB technology, in addition to the Snapdragon™ 888+ 5G Mobile Platform, 120W wired fast charging, 50W wireless fast charging, and more.

Xiaomi CUP Full Screen Technology: A possibly perfect display

It has been 5 years since Xiaomi launched its first MIX concept phone. Today, Xiaomi MIX 4 makes a triumphant return with brand new Camera Under Panel design, a technology iterated through three major generations, five years, sixty patents, USD 77 million investment, and hundreds of engineers.

CUP technology offers a 400 ppi seamless viewing in the camera zone, matching the pixel density, brightness, and color detail of the surrounding screen. While the camera is virtually invisible to the eye, Xiaomi MIX 4 combines its hardware and software capabilities to ensure the resulting photographs and videos captured using the front camera retain true colors and details. This is done through Xiaomi’s CUP technology, which minimizes light diffraction through a special circuit design, as well as a new transparent curved wiring Indium Tin Oxide (ITO) material coupled with imaging algorithms.

Boasting a stunning 6.67’’ AMOLED 3D curved display with 10-bit TrueColor, Xiaomi MIX 4 delivers an excellent visual experience with unparalleled color accuracy. Paired with 120Hz refresh rate and 480Hz touch sampling rate, Xiaomi MIX 4 immerses you in smooth scrolling and extreme responsiveness.

Lightweight Ceramic Unibody: Exquisite style and texture

Xiaomi MIX 4 inherits the series’ classic ceramic unibody design. Baked three times at a temperature of 1,400ºC, the ceramic body blends with the camera deco, symbolizing an aesthetic melange of art and technology. Even better, the new fine ceramic material weight is reduced by 30%, making it exquisite and light to hold, while keeping it strong and durable.

Xiaomi MIX 4, comes in three colors: Ceramic Black, Ceramic White, and the all-new Ceramic Gray – inspired by China’s Song Dynasty porcelain. The Ceramic Gray color variant is fabricated by using rare earth metals as colorants and a baking temperature control within ±5℃. This unique color adds a further air of sophistication with green and light blue color tones evoking true elegance.  

120W Wired & 50W Wireless Fast Charging: Stay in power

Xiaomi has always been at the forefront of fast charging technology. With a massive 4,500mAh battery that ensures all-day power, Xiaomi MIX 4 delivers next-generation charging in the form of 120W wired fast charging and 50W wireless fast charging. To keep things up-to-speed, the Boost Mode allows the battery to charge up to 100% in under 15 minutes and 28 minutes with wired charging and wireless charging respectively*.

Xiaomi MIX 4 also comes with an intelligent fast charging modulation algorithm that helps regulate charging temperature and speed for different scenarios, as well as increasing battery charge cycles by up to 25%*.

The MTW technology used in the battery greatly increases the charging speed and reduces the charging temperature. Graphene anodes is a third-generation conductive agent, with a conductivity that is 1000 times that of traditional carbon black anodes. It can form a highly efficient conductive network and has a smaller internal resistance of the diaphragm, which greatly improves the fast charging performance of the battery.

Quick Specs:

Xiaomi MIX 4
6.67″ CUP Full Screen Display
3D curved AMOLED, 2400×1080, 400 ppi (camera zone)
Supports P3 color gamut, JNCD≈0.34, dE≈0.40
120Hz refresh rate, 480Hz touch sampling, contrast ratio: 5,000,000:1, 10-bit TrueColor
Supports Dolby Vision, HDR10+
360° ambient light sensor
Corning® Gorilla® Glass Victus™
ProcessorQualcomm® Snapdragon™ 888+, up to 3.0GHz, AI performance improved by 23%**
StorageLPDDR5 6400Mbps + UFS 3.1
Heat Dissipation1,232mm² large 3D graphene + 4,584mm² graphene + 5,070mm² graphite + 702mm² graphite
Rear Camera
108MP main camera: 1/1.33″ HMX sensor, 1.6μm 4-in-1 Super Pixel, OIS, 7P lens
13MP ultra-wide angle camera: free-form lens, FOV 120°, 6P lens
8MP periscope camera: 5X optical zoom, 50x digital zoom, OIS
Front Camera20MP CUP camera, 1.6μm 4-in-1 Super Pixel
ConnectionUWB point-to-connect feature, Multifunctional NFC, IR Blaster
Battery and Charging
4,500mAh battery with MTW technology
120W wired charging: 21mins to 100% in default mode, 15mins to 100% in Boost Mode*
50W wireless charging: 45min to 100% in default mode, 28min to 100% in Boost Mode*
Custom 1014 linear top speaker, 1216P linear bottom speaker
SOUND BY Harman Kardon
Hi-Res Audio Certification
Hi-Res Audio Wireless Certification
MotorX-axis linear motor
ColorCeramic Gray, Ceramic White, Ceramic Black
Dimension and Weight162.65 x 75.35 x 8.02mm, 225g
Variant8GB+128GB, 8GB+256GB, 12GB+256GB and 12GB+512GB


Xiaomi MIX 4 comes in four storage variants: 8GB+128GB, 8GB+256GB, 12GB+256GB and 12GB+512GB, and retails at RMB 4,999, RMB 5,299, RMB 5,799 and RMB 6,299 respectively.
Official sales will start at 10am on August 16th in Mainland China via official Xiaomi channels.

In addition to smartphones, a number of accessories were released, including a new generation wireless charging stand, priced at RMB 599, and an eco-friendly leather case, priced at RMB 149.

Source MI
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