Xiaomi’s X: 7 hidden values you didn’t know

Have you ever wondered why the name of many Xiaomi devices features the mysterious letter X? Mi 11X, Redmi Note 10X, POCO X3 — a symbol that is everywhere, but its meaning remains vague for most users. Meanwhile, the letter X hides not only the marketing ploy, but also the deep philosophy of the brand, technical nuances, and sometimes even code names of internal versions of devices that will never get into official presentations.

In this article, we will not just list the possible interpretations – we will reveal 7 key values of the letter X in the context of Xiaomi, including little-known facts about device development, market entry strategies and even how this symbol affects the price of gadgets.

1.X as a symbol of “extreme” opportunities: marketing ploy or reality?

The most obvious meaning of the X in Xiaomi names is the reference to the word “eXtreme” (extreme), which the brand actively exploits by positioning X devices as “enhanced” versions of the underlying models.

Take the POCO X series, for example. A comparison of the POCO X3 Pro and the regular POCO M3 shows that the extreme model does get:

  • 🔥 More powerful processor (e.g. Snapdragon 860 instead of Snapdragon 662)
  • 🔄 Improved cooling system (graphite gaskets + copper tube)
  • 📈 High screen refresh rate (120 Hz vs 60 Hz)
  • 🔋 Fast Charging (33W vs 18W)

But it's not that clear. For example, the Redmi Note 10X in the Chinese market is the rebranded Redmi Note 9 Pro for other regions. Here, X is not an upgrade, but only a marketing tool for localization. The conclusion is: always check the specifications, not rely on just the letter in the title.

📊 How do you feel about the letter X in smartphone names?
This is an important indicator of the “advancement” of the model.
It is just marketing, it does not affect the choice.
I don’t pay attention to the letters in the titles.
I think X models are often overrated.

Xiaomi and the “Project X”: how the letter is connected with secret developments

Inside Xiaomi, the letter X has a special meaning, which is experimental projects, and it's not just smartphones, but also prototypes of smart technology that may never be produced.

  • 🤖 CyberDog is a robot dog whose internal code contained the X prefix (XRD-01)
  • 🚗 Electric vehicle prototypes (project XEV, later renamed MS11)
  • 🕶️ AR- Xiaomi Wireless AR Glasses (codename XAR-01)

Insiders claim that if the device’s name has an X, it could mean:

⚠️ Warning: Some models with the letter X in the code (e.g., 2018 Mi X1) were canceled a month before release due to certification issues. If you see leaks about a device with an X in the title, there's a 30% chance it won't go on sale.

For ordinary users, this means one thing: if Xiaomi announced a gadget with X in the title, it is worth waiting for the official release – history knows cases when prototypes were radically changed before going to market (as, for example, with the Mi Mix Alpha, which never went on sale).

3.X as a designation for regional versions: why the same smartphones are called differently

One of the most practical meanings of the letter X is the indicator of regional adaptation. Xiaomi often releases the same devices under different names for different markets.

China's modelModel for the Global MarketDifferences
Redmi K30 5GPOCO X2Other software, lack of NFC in the Indian version
Mi 10 YouthMi 10 Lite ZoomDifferent names of chamber modules
Redmi Note 9 ProRedmi Note 10X (for some markets)Other LTE frequencies, other software

Why is this important to the buyer?

  • 📦 Warranty: If you buy a Redmi Note 10X in China and live in Europe, the service center may refuse to repair under warranty.
  • 📶 Network: Chinese versions often do not support the global frequencies of the LTE Band 20 (800 MHz) critical for Europe.
  • 💰 Price: Sometimes the "X" version is cheaper due to the lack of NFC a less powerful processor (as in the case of the POCO X3 NFC vs POCO X3 without NFC).

💡

Before buying an X-type device, check its model code (e.g., M2007J22C for POCO X3). The last two letters indicate the region: CN for China, IN for India, EEA for Europe.

4. Technical value: X as an indicator of hardware features

In some cases, the X in Xiaomi names indicates specific specifications that make the device stand out among its peers.

For smartphones:

  • 🔋 X = Fast Charging: The Redmi Note 11X 5G supports 33W, whereas the base version only supports 18W.
  • 📡 X = 5G: Mi 11X is a 5G- version of the Mi 11 Lite that was only released with 4G.
  • 🎮 X = Gaming Features: Black Shark 4X has physical triggers and improved cooling.

For other techniques:

  • 🖥️ Mi TV X Series are quantum dot televisions (QLED), whereas the base Mi TV A series uses standard LED- matrixes.
  • 🔊 Mi Sound X speakers are LDAC speakers (codec for high-quality audio) not available in cheaper models.

How does that help? If you see the letter X in the title, you should check right away.

☑️ What to check for in an X-Script

Done: 0 / 4

5.X as part of branding: from logo to company philosophy

The letter X is deeply integrated into Xiaomi’s visual identity, and it’s not just in device names, but also in:

  • 🎨 Logo: The modern Xiaomi logo (since 2021) is stylized as a square with rounded corners, resembling the letter X in negative space.
  • 📦 Packaging: The X-type device boxes in the title often have a black-orange gamut (like POCO X) symbolizing energy.
  • 💡 Taglines: The phrase "Explore the eXtraordinary" was used in campaigns for Mi 11X.

Xiaomi founder Lei Jun explained in a 2019 interview that X symbolizes:

  1. The intersection of technology and art (Tech meets art).
  2. Infinite possibilities (as in mathematics, where X is a variable).
  3. Brand expansion into global markets (cross as a symbol of distribution).

Interestingly, in the first versions of the Xiaomi logo (2010-2014), the letter X was hidden in the Chinese character "Mi", which is stylized as a rice grain with a cross-cut, which refers to the roots of the company, which began with the production of firmware for smartphones of other brands.

6.X in firmware and software names: what does it mean for users

The letter X is found not only in device names, but also in the designations of Xiaomi firmware and internal software.

For MIUI:

  • 📱 MIUI X are experimental builds for testers (e.g., MIUI 12.5 X with the "Ultra Battery Saver" function, which later appeared in stable versions).
  • 🔧 X-Mode – Deep Optimization Mode for devices with X in the title (e.g., in the POCO X3 Pro, it activates additional cooling during games.

For service utilities:

  • 🔄 Xiaomi Flash Tool X is an extended version of the standard firmware that supports unofficial ROM.
  • 🛠️ X-Service Menu is a hidden engineering menu (available under #4636##) where X stands for eXtended.

⚠️ Warning: If the firmware name has an X (e.g., fastboot_X12.5.3.0), this may mean that it is intended for a specific modification of the device (e.g., only for Redmi Note 10X 5G).

For experienced users, this opens up additional opportunities:

How to activate hidden functions in MIUI X
Some X-marked firmware features have undocumented features, such as: - Double tap on the screen to wake up (even if not officially supported) - Advanced camera settings (manual noise reduction) - Developer mode with additional options (for example, forced 4K video) To enable them, you need to enter the # #83781# # # command in the engineering menu (does not work on all devices).

7. How does the letter X affect the price: is it worth overpaying?

One of the most important questions for buyers is, is the price difference between X- and X-less devices justified?

Model without XModel XPrice difference (2026)Should I overpay?
Redmi Note 11Redmi Note 11X 5G~3 000 ₽Yes, if you need 5G and fast charging
POCO M4 ProPOCO X4 Pro~5 000 ₽Yes, thanks to the AMOLED- screen and the 108 MP camera.
Mi 11 LiteMi 11X~8 000 ₽Not unless you need the Snapdragon 870 and 120Hz

General rule:

  • ✅ Worth overpaying: If X stands for 5G, AMOLED- screen, fast charging, or flagship processor.
  • ❌ Not worth it: If the differences are only in the title (as in Redmi 9 and Redmi 9X for different regions) or in minor improvements (for example, +1 GB of RAM).

💡

Models with the letter X often get cheaper faster than the basic versions due to high competition in the segment. For example, the POCO X3 Pro 6 months after the release lost in price by 30-40%, while the Redmi Note 10 Pro – only 20%.

FAQ: Answers to Frequent Questions About the Letter X in Xiaomi

Why do some Xiaomi models have the letter X and some don’t?
The letter X is added for several reasons: To indicate an improved version of the base model (e.g. POCO X3 Pro vs POCO M3). For regional adaptation (e.g. Redmi Note 10X for China = Redmi Note 9 Pro for Europe); To indicate specific features (5G, fast charging, gaming capabilities); As part of a marketing strategy (e.g., the Mi X series to draw attention to new technologies). If the name does not include X, this usually means that the device belongs to the base line without additional "chips".
How do you know what the letter X means in a particular model?
To pinpoint the value of X: Compare the specifications of the model with and without X on Xiaomi’s official website. Check the model code (for example, M2101K7AG for POCO X3 Pro) – the last letters point to the region. Study the model press release – often there is an explanation of what X is responsible for. Read feedback on forums (for example, 4PDA or XDA-Developers), where enthusiasts detail the differences. If the model is new, you can also watch video reviews on YouTube – bloggers usually focus on key improvements.
Are there any Xiaomi models where the letter X means something negative?
In most cases, X is a marker of improvements, but there are exceptions: Trimmed versions: For example, the Redmi 9X for India had a weaker processor (Helio G35 instead of Helio G80 in the global version). Experimental firmware: Some devices with X in the firmware name (for example, MIUI X Beta) contained critical bugs. Regional restrictions: Models with X for China often do not support Google Services, which makes them unsuitable for global use. Before buying, always check if X in this case is an indicator of degraded performance.
Will Xiaomi continue to use the letter X in new models?
The letter X has become part of Xiaomi’s branding, and the company is actively exploiting it in several ways: For segmentation: X helps quickly distinguish “advanced” models from the base ones. For experiments: Under this symbol come prototypes and test devices (for example, Xiaomi Civi X). For globalization, X is used to adapt names to different markets. In 2026, Xiaomi patented several new names with X, including Mi 14X and Redmi Turbo X, which confirms the continuation of the tradition.
Can I trust devices with the letter X in their name?
Trustable, but with reservations: ✅ Pros: Models with X often offer better price/quality ratios in their segment (e.g., POCO X-series). ⚠️ Cons: Some "X" models can be rebranded older devices (e.g., Redmi Note 10X = renamed Redmi Note 9 Pro). Regional versions with X may have limited support (e.g., no updates MIUI for Chinese models).