Technical sheet of Xiaomi Mix 4


  • Camera quality
  • Display quality
  • Sound
  • No Mini Jack
  • Weight
  • No FM Radio

Introducing the Xiaomi Mix 4 – a High-End Smartphone with Unsurpassed Design and Performance

The Xiaomi Mix 4 is the latest flagship model from the Chinese consumer electronics giant Xiaomi. It was announced in August 2021 and promises to deliver a powerful combination of elegant design and cutting-edge features. Internally, it features the latest Qualcomm Snapdragon 888+ (5nm) processor, up to 12GB of RAM and storage options ranging from 128GB to 512GB. On the external side of things, the Mix 4 boasts a breathtaking 6.67” AMOLED display with a resolution of 1080x2400, HDR10+, a refresh rate of 120 Hz, max brightness of 800 cd/m2, and a 5000000:1 contrast ratio. The phone also features stereo speakers and Hi-Res audio certified by both Harman Kardon and Hi-Res Audio Wireless.

Design-wise, the Xiaomi Mix 4 sports an all-ceramic body and Corning Gorilla Glass Victus on the front for maximum protection against nicks and scratches. It has an impressive usable surface area of 87.3%, putting it among the top phones when it comes to this metric.

For imaging, the Xiaomi Mix 4 sports a triple camera setup composed of a 108Mpx standard Samsung Bright S5KHMX lens, a 13Mpx f/2.2 wide angle lens and an 8Mpx f/4.1 telephoto lens. It also features optical stabilization, 4K and 8K video recording, a 20Mpx under-display selfie camera, and support for up to 5x optical zoom with OIS.

The Xiaomi Mix 4 also has a number of unique hardware features that set it apart from the competition. These include a 1206mm² large surface 3D graphene board, a 4932mm² medium frame dual 40um graphene, a 5150mm² dual 40um graphite, and a X-axis linear motor. In addition, it features a 4500mAh battery with 120 watts fast charging technology.

When it comes to connectivity, the Xiaomi Mix 4 supports Bluetooth 5.2, Dual SIM, NFC, WiFi 6 (802.11ax), GPS (L1+L5), Infrared, and a new wireless technology called UWB which supports ultra-wide bands in the 65GHz and 8GHz ranges. The UWB connection should help reduce latency and increase accuracy when connecting to other devices.

All in all, the Xiaomi Mix 4 looks to be an excellent choice for anyone looking for a powerful, high-end smartphone. Its design is elegant and modern, its hardware is top-of-the-line, and its camera and connectivity features are second to none. The only potential downsides are its lack of a mini jack port, its weight, and the fact that it does not have an FM radio.

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Brand Xiaomi
Best Sellers
Smartphones by Xiaomi

Xiaomi Mix 4 prices

Versions and prices
Xiaomi Mix 4 China · 8GB · 128GB
Xiaomi Mix 4 China · 8GB · 256GB
Xiaomi Mix 4 China · 12GB · 256GB
Xiaomi Mix 4 China · 12GB · 512GB

Release Date

Release dateAugust 2021, 2 years ago



Design & Materials of Xiaomi Mix 4

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75.3 mm162.6 mm8.0 mm
Print 3D Model
Weight 225 g
Usable surface 87 %
Materials Ceramics


Aspect Ratio 20:9
Resolution 1080 x 2400 px FHD+
Density 395 ppi High Density
Best big screen mobilesBest mobile phones with AMOLED screen
  • Hi-Res Audio
  • Stereo Speakers
  • 2 microphones
Customized 1014 super linear upper speaker, 1216P super linear lower speaker, Harman Kardon professional tuning stereo dual speakers, Hi Res Audio certification, Hi-Res Audio Wireless certification.
Harman Kardon stereo dual speakers

Performance & Hardware of Xiaomi Mix 4


Model Qualcomm Snapdragon 888+
CPU 1x Cortex X1 3.0GHz + 3x Cortex A78 2.42GHz + 4x Cortex A55 1.8GHz
Type Octa-Core
Nanometer 5 nm
Frequency 3 GHz
64 Bits Yes
More smartphones with Qualcomm Snapdragon 888+ processor


GPU Adreno 660


More smartphones with 8GB RAM memory


884.257 Antutu v10
Overall performance better than 90% of devices


Capacity 128 GB
Type UFS Storage 3.1
SD Slot No
More smartphones with 128GB of internal storage


Fingerprint Yes, in screen


Fingerprint Yes
Light sensor Yes
Accelerometer Yes
Compass Yes
Gravity Yes
Hall Yes
LiDAR Scanner Yes
Ultrasonic proximity virtual Yes
Notifications LED --
Cooling system Yes
Gaming buttons No
  • 1206mm² Large surface 3D graphene board + 4932mm² Medium frame dual 40um graphene + 5150mm² dual 40um graphite
  • X-axis linear motor

Camera of Xiaomi Mix 4

Triple rear camera

Resolution 108 Mpx
Sensor Samsung Bright S5KHMX
Aperture Unknow
ISO --
Pixel size 0.80 µm
Pixel Binning 1-4 (2x2)
Sensor size 1/1.33"
13 Mpx
ƒ/ 2.2
Pixel size
Telephoto lens
8 Mpx
ƒ/ 4.1
Pixel size
Flash Dual LED
Optical Stabilisation Yes
Slow Motion Video Yes, 480 fps
  • 4K Video
  • 8K Video
  • Digital zoom
  • Optical zoom
  • Triple camera
  • Digital image stabilization
  • Optical Stabilization (OIS)
  • Ultra stable video
  • Autofocus
  • Touch focus
  • Continuous autofocus
  • Manual focus
  • Laser AF
  • Phase detection autofocus (PDAF)
  • Under display camera
  • Continuous shooting
  • Geotagging
  • Panorama
  • HDR
  • Face detection
  • White balance settings
  • ISO settings
  • Scene mode
  • Self-timer
  • RAW
  • Night Mode
More smartphones with Bright S5KHMX lens modelMore smartphones with Dual LED


Resolution 20 Mpx
Sensor Samsung S5K3T2
Aperture Unknow
Pixel size 0.80 µm
Pixel Binning 1-4 (2x2)
Sensor size 1/3.4"
  • 7P Lens
  • 120º Ultra wide angle camera 6P Lens
  • 5X optical Zoom with OIS
  • Video 4K 60fps
Kimovil Frequency Checker

Network compatibility

Connectivity of Xiaomi Mix 4


5G n1 (2100), n3 (1800), n5 (850), n8 (900), n28b (700), n28a (700), n41 (2500), n77 (3700), n78 (3500), n79 (4700)
4G LTE B1 (2100), B2 (1900), B3 (1800), B4 (1700/2100 AWS 1), B5 (850), B7 (2600), B8 (900), B12 (700), B17 (700), B18 (800), B19 (800), B20 (800), B26 (850), B28b (700), B28a (700), B34 (TDD 2100), B38 (TDD 2600), B39 (TDD 1900), B40 (TDD 2300), B41 (TDD 2500), B42 (TDD 3500)
3G B1 (2100), B2 (1900), B4 (1700/2100 AWS A-F), B5 (850), B6 (800), B8 (900), B19 (800)
2G CDMA BC0 (800), B2 (1900), B3 (1800), B5 (850), B8 (900)

SIM card

TypeDual SIM Dual Standby (Nano SIM + Nano SIM)

SIM cards (MiniSIM) can be cut to MicroSIM, MicroSIM can be cut to NanoSIM and a SIM can even be cut to a NanoSIM (although not recommended). Download this SIM Cutting Template and forget about having to ask your operator for a new SIM...


Standards 802.11a , 802.11b , 802.11g , 802.11n , 802.11n 5GHz , 802.11ac, WiFi 6 (802.11ax)
  • Dual band
  • Wi-Fi Hotspot
  • Wi-Fi Direct
  • Wi-Fi Display


Version Bluetooth 5.2 LELow energy consumption
  • A2DP (Advanced Audio Distribution Profile)
  • LE (Low Energy)
  • APT-x
  • LDAC
  • SBC
  • AAC


Supports GPS, A-GPS, GLONASS, Beidou, QZSS, Galileo, GPS (L1+L5), GLONASS (L1), BeiDou (B1), Galileo (E1+E5a), BeiDou (B2), QZSS (L1 + L5)


Charging Yes
Mass Storage Yes
USB On-The-Go (OTG) Yes
USB Type C Yes


-- --
Audio Jack
Radio FM
Computer sync
OTA sync
  • Xiaomi MIX 4 builds a new wireless technology UWB connection. UWB supports 50CMHz ultra-wide bands in the 65GHz and 8GHz range. Nowadays, with the support of UWB technology, Xiaomi MIX 4 connects the mobile phone and the device in a more accurate and fastest way.
  • TOF with high degree rotation: The two-way TOF flight period measurement method is adopted, and is used to measure the distance .

Battery of Xiaomi Mix 4

4500 mAh
Type Lithium
Fast charge Yes , 120.0W
  • Non-removable
  • 50W wireless charge
  • 10W Wireless reverse charging
  • The phone supports QC4 / QC3+ / PD3.0 fast charge protocol

Software of Xiaomi Mix 4


Operating System Android 12 Snow Cone
MIUI V13 (Android 12)
Google Services (official) No
More smartphones with MIUI V13 (Android 12) operating system

User reviews about the Xiaomi Mix 4

Overall satisfaction
Not enough reviews
4 reviews
  • Screen9.4
  • Performance10
  • Camera8.4
  • Connectivity9.3
  • Battery7.5
Want to comment on the Xiaomi Mix 4?

It'll only take a minute, you'll help people decide.

Latest reviews added

  • Wow I love it

    The Xiaomi mi mix 4 is a beast! Hardware 10 points no overheating no bugs Qualcomm really works on the 888 problems and Xiaomi finished it. The camera takes awesome pictures daylight and low-light. The sound tuned by Harman&Kardon is mind-blowing and the display is a masterpiece of technology with the under display selfi cam.

    Belong the Vivo x70 pro plus best smartphone on the market

    • All
    • Attention no ip 68 only 52
    • 10
    • Screen10
    • Performance10
    • Camera9.5
    • Connectivity10
    • Battery9.0
  • Auto
    The taste of high-end

    Nothing is left to chance on this mobile and the custom rom by makes the smartphone more versatile than under any rom. The fusion between the quality of a Chinese rom with the efficiency and usefulness of the global rom makes the interface perfect. On the other hand, this smartphone has everything that is best when it comes out.

    • 120W charging
    • Daytime photo ×5
    • Power of 888+
    • Autonomy
    • 10
    • Screen10
    • Performance10
    • Camera8.0
    • Connectivity10
    • Battery5.0
  • Auto
    It's the best cell phone I've ever had, I also had the mix 3 and I loved it that's why I bought the 4 hehe

    • 9.4
    • Screen9.5
    • Performance10
    • Camera8.2
    • Connectivity10
    • Battery9.0


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Questions · FAQ

Frequently asked questions about the Xiaomi Mix 4.

What are the features of the Xiaomi Mix 4?

These are the main features and specifications of the Xiaomi Mix 4:

  • Screen: 6.67" AMOLED
  • Resolution: 1080 x 2400 px · FHD+
  • RAM: 8GB - 12GB
  • Storage: 128GB - 512GB
  • Processor: Qualcomm Snapdragon 888+

What is the price of Xiaomi Mix 4?

There are no prices available for the Xiaomi Mix 4 in United States.

How long does the battery of the Xiaomi Mix 4 last?

The Xiaomi Mix 4 battery has a capacity of 4500 mAh.

In which colours is the Xiaomi Mix 4 available?

The Xiaomi Mix 4 is available in 3 colours: Black, White and Gray.

When was the Xiaomi Mix 4 release date?

The Xiaomi Mix 4 was unveiled on Tuesday, August 10, 2021.

Does the Xiaomi Mix 4 have 5G?

Xiaomi Mix 4 has 5G on 10 bands: n1 (2100), n3 (1800), n5 (850), n8 (900), n28b (700), n28a (700), n41 (2500), n77 (3700), n78 (3500) and n79 (4700).

Which camera does the Xiaomi Mix 4 have?

The Xiaomi Mix 4 has a triple rear camera and its main sensor is Samsung Bright S5KHMX with a resolution of 108Mpx.

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Last update
September 21, 2023
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Ki Cost-effective
No price,
no Ki
  • 8.3 Design & Materials
  • 7.8 Performance & Hardware
  • 7.4 Camera
  • 7.4 Connectivity
  • 6.1 Battery
What is a Ki score?
Ki is an automatic score based on the specifications and prices of devices. It is calculated using over 200 variables to rank smartphones, tablets and other devices from best to worst.
How do we calculate the Ki?

In this case, to determine the score we evaluate 5 general aspects:

  • Design and screen
  • Hardware and performance
  • Camera
  • Connectivity
  • Battery

Once these 5 factors have been rated, we introduce the price variable. This means that any two devices with the same ratings get a different Ki score for quality vs price.

Even a device objectively worse than another may have a higher Ki score if it has a better price.

Does the Ki score change?

The Ki varies as time goes by. As new devices with better specifications enter the market the Ki score of older devices will go down, always being compensated of their decrease in price.