Xiaomi Mix 4 review

Added by on 08.11.21 | Last update 11.16.21
Xiaomi Mix 4 review

The Chinese company Xiaomi is known for producing quality smartphones at an affordable price. In its product range you will also find premium models, marked as Mix. The new addition to the family in 2021 is called Xiaomi Mix 4. This model is characterized by the absence of frames and slots and the presence of a bunch of innovative solutions.

Xiaomi Mix 4 Specifications

  • Release date: 2021, August 10
  • Colors: Ceramic Black, Ceramic White, Shadow Gray
  • Dimensions: 162.6 x 75.4 x 8 mm.
  • Weight: 225 g.
  • Screen: 6.67" in, 1080 x 2400, AMOLED
  • Camera : Triple, 108MP
  • Chipset: Qualcomm SM8350 Snapdragon 888+ 5G (5 nm)
  • CPU: Octa-core (1x2.99 GHz Kryo 680 & 3x2.42 GHz Kryo 680 & 4x1.80 GHz Kryo 680)
  • Memory: 128GB 8GB RAM, 256GB 8GB RAM, 256GB 12GB RAM, 512GB 12GB RAM
  • Battery: 4500, Li-Po, non-removable
  • Network: GSM / CDMA / HSPA / EVDO / LTE / 5G
  • Operating system: Android 11, MIUI 12.5
  • Sensors: Fingerprint (under display, optical), accelerometer, gyro, proximity, compass, color spectrum

If you are curious to find out all the details before reading the full review, visit the page for Xiaomi Mix 4 Specs, where you will find even the smallest detail about the phone.


The body of Xiaomi Mix 4 is made of ceramic. If you are expecting plastic, you will not find it. The device weighs 225 grams and does not load who knows how many palms. The ceramic coating is pleasant to the touch and makes the device look expensive. You have a choice of colors - gray, white and black.

The back surface and pages of the screen are nicely rounded, which enhances the feeling of an endless display. In the upper left corner of the rear panel is a huge module with cameras, which protrudes slightly above the body. This position of the rear camera is convenient for all users and reduces the risk of lens contamination. The ceramic coating on the back helps to keep a minimum of fingerprints. In terms of dimensions, this Xiaomi model is one of the most convenient to use on the market in 2021.


Xiaomi Mix 4 has a satisfactorily large display - 6.67-inch, AMOLED, with a resolution of 2400 x 1080 pixels and a refresh rate of 120 Hz. In everyday use, you will not pay attention to the front camera - the screen is too captivating. The picture is flawless - close to natural colors, excellent contrast and brightness. The display looks limitless and will bring you maximum enjoyment while playing games and watching movies.


Beneath the sleek look of the Xiaomi Mix 4 lies the powerful Snapdragon 888 Plus chipset. It is the best you can see in an Android smartphone in 2021. This improved version of the SD888 clocks the core core Cortex-X1 up to 3 GHz. It now consumes much more energy and has a balanced mode in which the CPU clock speed is slightly limited. This reduces the risk of overheating and drains the battery more slowly. Maximum performance mode is also available in the Xiaomi Mix 4. Adreno 660 is responsible for the graphics.

As for memory, it is 8 or 12 GB of RAM and is complemented by 128, 256 or 512 GB of internal storage. There are four modifications. Given the fact that you can't increase storage, think carefully about which one to choose.

The smartphone runs Android 11 and MIUI 12.5.3, which has a lot of useful screen technology. As an example we can give DC Dimming and vision protection.


Xiaomi Mix 4 cameras are not inferior to the flagships of competitors. The main module is 108 MP with optical stabilization. It is complemented by a 13-megapixel ultra-wide-angle camera and an 8-megapixel telephoto lens. The ultra-wide angle camera has a visibility of 120 degrees. It will serve you well when creating panoramic photos. The telephoto lens supports 5x zoom.

The main module impresses with great photos, lots of detail and contrast. They are perfect for sharing on social networks. Sometimes they create the feeling that they were made with a professional device.

The front camera of the Xiaomi Mix 4 deserves special attention. It has been improved. When shooting in good light conditions, you will create unique shots. In the evening, the photos will be slightly blurred, but with practice you can achieve a better result.

Autonomous work

Xiaomi Mix 4 has a battery with a capacity of 4500 mAh. The manufacturer has provided support for 120W fast charging technology and -50W wireless charging. Due to the size of the display and the powerful processor, the charge may be insufficient. With intensive use you can count on 7-8 hours of battery life. In the set you get a charger with which you will return 40% of the charge in just 10 minutes.

In Xiaomi Mix 4, the company has implemented a function to protect the battery at night. As the device charges quickly, prolonged use of the mains may have a negative effect on the battery. The problem is easily solved - when the phone "detects" that you are asleep, it recharges only up to 80%. Shortly before you wake up, the artificial intelligence algorithms fill the charge to 100%. For the system to work, it needs to learn your habits within 2 weeks.

Another interesting technology is Xiaomi Always On UWB - with its help you can connect to compatible devices in the smart home.


Xiaomi Mix 4 is an attractive model that will appeal to users of Android phones. It offers a superb screen, new technology, good battery life and a front camera hidden under the display.

Xiaomi Mix 4 video review

Disclaimer: The information presented in this article is based on our team's personal experience with the Xiaomi Mix 4 and third-party sources. While every effort has been made to provide accurate and reliable information, readers should keep in mind that this is a subjective assessment. The writing of this article was not paid for or sponsored by Xiaomi.

Richard Taylor

Richard Taylor

Hello, I am Richard Taylor, a technology expert and journalist from the UK. I have a degree in Computer Science from the University of Birmingham. My passion is the latest technology, especially smartphones. That's why I chose to test, analyze, and write expert reviews about them. My technical expertise, combined with a deep passion for technology and years of experience, has made me a trusted source of information. Over the years, I have written reviews for various sites, but for quite some time now, I have been writing exclusively for PhonesData. You can see more about me here or read all my smartphone reviews here.

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