Xiaomi Mix Fold 4 Review

Xiaomi Mix Fold 4 Review
1 day ago

Foldable phones have sparked a revolution in the world of smart devices, combining flexible design and powerful performance in one. The Xiaomi Mix Fold 4 stands out as one of the most prominent foldable phones of 2025. Xiaomi delivers a well-rounded package of modern technology, sleek design, and a spacious display that opens new possibilities for smartphone use. In this comprehensive review, we explore the phone's full specifications, assess its performance in various areas, highlight its pros and cons, and provide buying tips for users interested in this premium category.

Xiaomi Mix Fold 4 Specifications Review

Design

Materials and Dimensions

The Xiaomi Mix Fold 4 features a premium design made from high-quality materials such as aluminum and reinforced glass. The phone has a slim and lightweight body compared to other foldable phones, offering a comfortable experience whether folded or unfolded.

Folding Mechanism

The phone uses an improved hinge with advanced technology to ensure smooth folding and high durability, capable of withstanding thousands of folds without impacting performance or screen quality.

Display

Main Display

The Xiaomi Mix Fold 4 comes with an 8.02-inch internal AMOLED display with a high resolution of up to 2K and a 120Hz refresh rate, providing a rich and smooth viewing experience for media, gaming, or multitasking.

Outer Display

The 6.5-inch outer display offers the same high quality and resolution, with support for high refresh rates and scratch resistance, making it easy to use the phone without needing to unfold it every time.

Battery

Capacity and Performance

The phone includes a battery of approximately 5000mAh, delivering excellent battery life that lasts a full day of intensive use.

Charging

The device supports fast charging at up to 67W, enabling a significant charge within minutes. It also supports wireless and reverse wireless charging.

Camera

Rear Camera

The phone features a quad rear camera system, including a 50MP main sensor with optical image stabilization, a 12MP ultra-wide lens, a 10MP telephoto lens, and a periscope lens supporting up to 5x optical zoom.

Front Camera

A 20MP front-facing camera is embedded in the outer display, delivering excellent selfie quality with AI support and enhancements for low-light conditions.

Audio

Sound Quality

The phone features stereo speakers supported by Dolby Atmos, providing an immersive and clear audio experience for video playback and gaming.

Microphones

It includes multiple built-in microphones offering excellent quality for audio recording and phone calls in various environments.

Processor

Performance and Architecture

The Xiaomi Mix Fold 4 is powered by Qualcomm's flagship Snapdragon 8 Gen 3 processor, built on a 4nm process, delivering strong performance for daily tasks, heavy applications, and high-graphics games.

Operating System

UI and System

The phone runs on Android 14 with the MIUI Fold interface tailored for foldable devices. It offers smart software features to fully utilize dual screens and multitasking efficiently and smoothly.

Memory

RAM

Available in multiple RAM configurations, starting from 12GB up to 16GB, providing a smooth experience even with demanding applications.

Storage

Storage options range from 256GB to 1TB using ultra-fast UFS 4.0 technology, allowing ample space for media and apps without the need for external memory cards.

Connectivity

Communication Technologies

The phone supports advanced communication features such as Wi-Fi 7, Bluetooth 5.3, NFC, and a USB Type-C port for fast data transfer and charging.

Networks

Network Support

The Xiaomi Mix Fold 4 supports all 2G, 3G, 4G, and full 5G networks, providing fast and stable connectivity in all regions.

Sensors

Sensor Types

The phone includes a comprehensive set of sensors such as a side-mounted fingerprint sensor, accelerometer, gyroscope, compass, proximity sensor, ambient light sensor, and advanced sensors to enhance the folding and unfolding experience.

Phone Colors

Available Options

The phone comes in several elegant colors, including matte black, glossy silver, and limited edition special colors, allowing users to choose a style that suits their taste.

The Xiaomi Mix Fold 4 delivers a complete experience combining elegant design, strong performance, and cutting-edge technology. It’s an ideal choice for foldable phone enthusiasts who seek a large, flexible display, excellent battery life, and professional-grade cameras. It stands as one of the strongest contenders in its class, with premium specifications and modern features meeting the needs of both power users and creators.

Pros of Xiaomi Mix Fold 4

  • Elegant and Durable Design: Features a slim and lightweight body with an improved and durable hinge.
  • High-Quality Dual Displays: Large high-resolution internal screen and practical external display with 120Hz refresh rate.
  • Powerful Performance: Snapdragon 8 Gen 3 delivers excellent performance in daily tasks and gaming.
  • Multiple Professional Cameras: Comprehensive camera system with multiple lenses and optical zoom support.
  • Fast Charging: Supports 67W wired fast charging, along with wireless and reverse charging.
  • Clear Stereo Sound: Powerful speakers with Dolby Atmos support.

Cons of Xiaomi Mix Fold 4

  • No External Memory Card Support: Fully dependent on internal storage only.
  • High Price: One of the more expensive phones compared to other high-end devices.
  • Not Officially Water-Resistant: Lacks official water and dust resistance rating, unlike some competitors.
  • Limited Global Availability: May be available only in select markets.

What’s New in the Xiaomi Mix Fold 4

Lighter and Thinner Design

The Xiaomi Mix Fold 4 comes with significant design improvements, making it thinner and lighter than the previous generation, which makes it easier to carry and use daily whether folded or unfolded.

Enhanced Hinge

The hinge has been noticeably upgraded for greater durability and smoother folding. The gap between the two halves of the phone when folded has been reduced, and it now withstands thousands of folds without affecting the structure or display.

Improved Performance with Snapdragon 8 Gen 3

The device is powered by Qualcomm’s latest Snapdragon 8 Gen 3 processor, providing a major performance leap compared to the previous generation in terms of system speed, gaming, and handling heavy applications.

Upgraded Camera System

Xiaomi has added an improved periscope camera for optical zoom, along with enhancements in low-light photography and AI-powered image processing.

Smart MIUI Fold Interface

The MIUI Fold interface has been updated to better support foldable screen usage, with new multitasking features such as smart split-screen and seamless app transitions.

Support for Newer Connectivity Technologies

The phone now supports Wi-Fi 7 and Bluetooth 5.3, offering faster and more stable connections, along with improved 5G network performance.

Strong Battery with Faster Charging

Despite the slimmer design, the battery remains powerful, with improvements in charging speed compared to the previous model, ensuring a smoother and more efficient daily experience.

Enhanced Audio Experience

Audio quality has been improved with Dolby Atmos support, offering 3D sound while watching videos or playing games.

In summary, what’s new in the Xiaomi Mix Fold 4 centers around its slimmer design, more powerful performance, enhanced cameras, and support for the latest connectivity standards, making it one of the standout foldable smartphones of 2025.

Xiaomi Mix Fold 4 Box Contents

The Xiaomi Mix Fold 4 box includes the following items:

  • The Xiaomi Mix Fold 4 smartphone

  • 67W fast charger

  • USB Type-C cable

  • Transparent protective case

  • SIM ejection tool

  • User manual and quick start guide

  • Warranty card

Xiaomi Mix Fold 4 Price

Country Currency Approximate Price
United States US Dollar 1799
Canada Canadian Dollar 2449
United Kingdom British Pound 1449
Germany Euro 1649
France Euro 1649
Italy Euro 1649
Spain Euro 1649
Australia Australian Dollar 2699
China Chinese Yuan 10999
Japan Japanese Yen 259000
India Indian Rupee 149999
UAE Emirati Dirham 6599
Saudi Arabia Saudi Riyal 6799
Qatar Qatari Riyal 6599
Kuwait Kuwaiti Dinar 549
Bahrain Bahraini Dinar 679
Oman Omani Rial 699
Egypt Egyptian Pound 86999
Morocco Moroccan Dirham 18999
Algeria Algerian Dinar 243000
Tunisia Tunisian Dinar 5299
South Africa South African Rand 33999
Turkey Turkish Lira 57999
Russia Russian Ruble 162000
Brazil Brazilian Real 8999
Argentina Argentine Peso 1699999
Mexico Mexican Peso 30999
Indonesia Indonesian Rupiah 26999000
South Korea Korean Won 2290000
Nigeria Nigerian Naira 1549999

Note: Prices are approximate and may vary depending on taxes, customs duties, and local market availability.

Warranty, Warranty Conditions, and After-Sales Service for the Xiaomi Mix Fold 4

Warranty

The Xiaomi Mix Fold 4 comes with an official warranty from Xiaomi. The warranty period varies by country but is typically 12 months from the date of purchase. The warranty covers manufacturing defects in the device and internal components, but it does not include damage caused by misuse.

Warranty Conditions

What the Warranty Covers

  • Malfunctions caused by manufacturing or component defects

  • Technical faults that appear during the warranty period

  • Replacement or repair of damaged parts free of charge if the defect is proven not to be due to misuse

What the Warranty Does Not Cover

  • Damage caused by drops, breakage, or exposure to liquids

  • Modifications or repairs performed at unauthorized service centers

  • Use of non-original accessories that cause damage to the device

  • Scratches or damage to the screen or external body due to improper use

General Conditions

  • The original purchase invoice must be provided to verify the purchase date

  • The device must not have been opened or tampered with outside of official service centers

  • The serial number of the device must be intact and match the original

After-Sales Service

Xiaomi provides a network of authorized service centers in many countries, offering the following services:

  • Free repairs during the warranty period according to the terms

  • Paid maintenance services after the warranty expires

  • Provision of original spare parts when needed

  • Direct technical support via the official website or support app

  • Continuous software updates for the operating system and user interface

  • Ability to track the repair status online in some countries

Xiaomi aims to deliver a professional and fast after-sales experience to ensure customer satisfaction and long-term brand loyalty.

Xiaomi Mix Fold 4 Performance

Overall Performance Experience

The Xiaomi Mix Fold 4 delivers outstanding performance thanks to its Snapdragon 8 Gen 3 processor, one of the most powerful chipsets of 2025. Built on a 4nm process, it offers excellent power efficiency and fast, responsive performance for app switching and multitasking.

System Speed

The MIUI Fold interface, based on Android 14, has been optimized to run smoothly on foldable screens. The system provides a flexible and fast user experience whether the device is folded or unfolded, allowing the simultaneous use of two or more apps without lag or freezing.

Performance in Daily Tasks

The phone easily handles daily tasks such as web browsing, video streaming, social media, and email without noticeable delay or excessive battery consumption.

Productivity and Multitasking

The large inner display is ideal for productivity tasks like editing documents, reading books, or working across multiple apps simultaneously. The device supports split-screen and multi-window usage, made efficient by its powerful processor and large RAM capacity.

Cooling and Thermal Management

The device features an advanced cooling system that reduces heat during heavy use or long gaming sessions, maintaining stable performance and preventing slowdowns or throttling.

Overall Performance Rating

In terms of overall performance, the Xiaomi Mix Fold 4 ranks among the top foldable smartphones on the market, combining processing power, system speed, and smooth user experience under all conditions.

Gaming Performance on the Xiaomi Mix Fold 4

Gaming Experience on the Inner Display

The Xiaomi Mix Fold 4 offers an immersive gaming experience with its large 8.02-inch AMOLED inner display, supporting a 120Hz refresh rate. This delivers smooth visuals and responsive gameplay. The spacious screen is perfect for detail-rich games such as combat, racing, or strategy titles.

Processor Performance in Games

The device is powered by the Snapdragon 8 Gen 3 processor with a powerful Adreno 750 GPU, making it suitable for running demanding games at high graphics settings without stuttering or frame drops. Games like PUBG Mobile, Call of Duty Mobile, and Genshin Impact run smoothly at the highest quality.

Cooling and Performance Stability

The phone features an advanced cooling system that maintains stable temperatures during extended gaming sessions, preventing thermal throttling and ensuring comfortable handling.

Audio and Controls

The phone supports stereo sound with Dolby Atmos, enhancing the gaming experience with clear, spatial audio that helps detect enemy directions in competitive games. The outer screen also allows for quick, on-the-go gaming when unfolding the device isn’t convenient.

Battery Consumption During Gaming

Despite its powerful performance, battery consumption remains within acceptable limits thanks to the processor’s efficiency and power-saving features. You can enjoy several hours of gaming before needing to recharge, especially with the 67W fast charging support.

Gaming Performance Summary

The Xiaomi Mix Fold 4 offers excellent gaming performance, thanks to its flagship specifications, large display, and powerful audio experience, making it an ideal choice for gaming enthusiasts seeking a professional experience on a foldable phone.

System Performance on the Xiaomi Mix Fold 4

Operating System

The Xiaomi Mix Fold 4 runs on Android 14 with the MIUI Fold interface, specially developed for foldable smartphones. This interface is designed to enhance the experience on dual screens, offering a cohesive layout with excellent multitasking and advanced task support.

Smooth Navigation

The system is very fast when switching between apps, opening menus, and performing tasks. There are no noticeable lags in daily use, whether on the internal or external screen, thanks to the seamless integration between powerful hardware and optimized software.

Folding Experience and Screen Transition

MIUI Fold supports a smooth transition between the external and internal displays, allowing users to start an app on the small screen and continue seamlessly on the larger display without interruption or reloading.

Multitasking

The phone supports advanced features like split-screen for two or more apps, floating windows, and quick task switching shortcuts, making it ideal for productivity and working with multiple apps simultaneously.

Customization and Smart Features

The system offers extensive customization options for themes, gestures, window control, and navigation shortcuts. It also includes smart features like mini-app windows and the ability to drag and drop content between apps with ease.

Updates and Support

Xiaomi is committed to providing regular security and system updates for its flagship phones. The Xiaomi Mix Fold 4 is expected to receive major Android updates for several years, ensuring long-term stability and security.

System Performance Evaluation

The Xiaomi Mix Fold 4 delivers a complete system experience combining speed, smoothness, and flexibility, with excellent multitasking and foldable screen support—making it one of the best in its class for software usability.

Battery Performance on the Xiaomi Mix Fold 4

Capacity and Technology

The Xiaomi Mix Fold 4 features a large approximately 5000mAh battery, which is well-suited for a foldable phone with two screens. The battery uses improved dual-cell technology to distribute power efficiently and reduce heat during use.

Daily Use Performance

The battery provides excellent performance in daily usage, lasting a full day with mixed activities like browsing, video playback, app usage, and calls. Even when using the internal display in tablet mode, performance remains reliable thanks to system optimizations and the energy-efficient processor.

Performance in Heavy Tasks

During gaming, video editing, or heavy app usage, the battery drains faster—but still within acceptable limits due to the efficiency of the Snapdragon 8 Gen 3 and AI-powered power management.

Fast Charging

The phone supports 67W fast charging, allowing it to charge from 0 to nearly 100% in under 45 minutes—an impressive speed for a battery of this size. It also supports wireless charging and reverse wireless charging for powering accessories like earbuds and smartwatches.

Power Management

The MIUI Fold interface includes smart battery modes, including battery saver and high-performance modes. Users can also manage app-by-app power consumption to extend battery life as needed.

Overall Evaluation

The Xiaomi Mix Fold 4 provides a strong and reliable battery that meets the demands of both daily tasks and heavier workloads, paired with a fast charging system that minimizes downtime—making it well-suited for users who need all-day power.

Global Reviews and User Ratings for the Xiaomi Mix Fold 4

Reviews from Global Tech Sites

The Xiaomi Mix Fold 4 has received positive reviews from most major tech websites. Experts praised the improved design, display quality, and the smooth folding experience. The phone is seen as a significant step forward in foldable devices, particularly in terms of weight, thinness, and the upgraded hinge compared to its predecessor.

The Snapdragon 8 Gen 3 processor was highlighted for its excellent performance in demanding tasks and games, while the large battery earned praise for lasting all day. The fast charging capability was noted as among the best in its class.

The camera system also received good reviews for daylight performance and detail capture, although some reviewers mentioned that night photography could be further improved compared to competitors.

Overall, the Mix Fold 4 was ranked among the best foldable smartphones of 2025 and viewed as a direct competitor to the Samsung Galaxy Fold series and Huawei Mate X.

User Reviews

Users who tested the phone expressed high satisfaction, especially in areas such as:

  • The large, high-quality internal screen for content consumption and productivity

  • The fast and fluid system performance, with seamless screen transitions

  • The battery life, which lasts a full day even with heavy usage

  • The premium build and luxurious feel during use

However, some users mentioned areas for improvement, including:

  • Lack of official water and dust resistance rating

  • High pricing in certain markets

  • Limited availability outside of China at launch

Despite these points, most users rated the phone very highly, with scores typically ranging between 8 and 9 out of 10 on most platforms. It is widely recommended for anyone looking for a foldable phone that combines practical performance with modern technology.

Competing Phones to the Xiaomi Mix Fold 4

Direct Competitors in the Foldable Phone Category

Samsung Galaxy Z Fold 6

The strongest competitor to the Xiaomi Mix Fold 4, it features advanced folding technology, high-quality internal and external displays, strong multitasking support, and the S Pen for enhanced productivity. It also benefits from long-term update support and Samsung’s custom One UI foldable interface.

Huawei Mate X5

Despite lacking Google services, the Huawei Mate X5 offers an excellent design with a large display, high build quality, strong performance, and impressive cameras—especially in low-light photography. It also features a durable hinge and advanced connectivity within China.

Honor Magic V2

One of the thinnest and lightest foldable phones on the market. It comes with stunning OLED displays, flagship performance thanks to the Snapdragon 8 Gen 2 processor, and a near-stock Android experience. It’s a strong contender for users seeking portability and a sleek design.

Oppo Find N3

Offers a compact and small form factor with excellent foldability and high screen quality. Known for its impressive camera performance thanks to collaboration with Hasselblad. It’s an ideal choice for those who want a classic-looking foldable phone.

Vivo X Fold 3 Pro

A top-tier foldable device featuring strong performance, advanced cameras, and a stunning internal display with high resolution and vibrant colors. It strikes a balance between performance, battery life, and design.

Flagship Non-Foldable Phones as Indirect Competitors

Although the Xiaomi Mix Fold 4 belongs to the foldable category, it also competes with traditional flagship phones such as:

  • Apple iPhone 15 Pro Max

  • Samsung Galaxy S24 Ultra

  • Xiaomi 14 Ultra

These phones offer excellent performance, advanced cameras, and stable software experiences, but they lack the foldable display feature that sets the Mix Fold 4 apart.

Xiaomi Mix Fold 4 stands out with its slim design, powerful performance, and smooth folding experience. It’s a great alternative to the Galaxy Z Fold 6 and Honor Magic V2 and even surpasses some rivals in battery life and charging speed. Its success will largely depend on global availability and Xiaomi’s ongoing software support.

Buying Tips for the Xiaomi Mix Fold 4

1. Clearly Define Your Needs

If you're looking for a phone that combines high performance, a large display, and multifunctional use, the Xiaomi Mix Fold 4 is an excellent choice. However, if you don't need a foldable screen, more affordable and simpler options might suit you better.

2. Ensure Availability in Your Country

The phone might not be available globally at launch, so it's best to check if it’s officially sold in your region or through trusted retailers offering warranty and after-sales service.

3. Review Local Warranty and Support

Make sure to understand the warranty terms in your country and check the availability of after-sales service. Foldable phones require specialized technical support and certified repair centers.

4. Compare with Competitors Before Buying

While the Mix Fold 4 excels in many areas, competitors like the Galaxy Z Fold 6 and Honor Magic V2 offer similar features. One of them might be more compatible with your preferences or digital ecosystem.

5. Watch Out for Overpriced Offers

Due to customs or shipping fees, the phone might be sold at inflated prices in some markets. It's advisable to compare prices across several stores or wait for the official launch in your region.

6. Prepare for a New Usage Experience

Foldable phones offer a different experience compared to traditional devices. Before buying, ensure you’re ready for dual screens, a larger pocket footprint, and software designed around multitasking.

7. Monitor Software Updates

Make sure Xiaomi continues to provide regular updates for the Mix Fold 4. Foldable phones rely heavily on system improvements to fully utilize the foldable screen and advanced features.

8. Invest in Extra Protection

Given the phone’s high price, it's recommended to purchase a custom protective case and screen protector to safeguard it from drops or scratches—especially with frequent folding and unfolding.

The Xiaomi Mix Fold 4 is a powerful and innovative flagship device ideal for users seeking advanced technology and cutting-edge design. By following these tips, you can ensure a smart, safe purchase that aligns with your expectations and daily needs.

Charging Tips for the Xiaomi Mix Fold 4

1. Always Use the Original Charger

For optimal performance and safety during charging, it is recommended to use the original charger and cable included with the phone. The Xiaomi Mix Fold 4 supports 67W fast charging, allowing the battery to charge fully in a short time without causing harm.

2. Avoid Overcharging for Long Periods

Although the phone is equipped with smart protection mechanisms, leaving it plugged in for extended periods after reaching 100% may affect battery lifespan over time. It's best to unplug the phone once it's fully charged.

3. Avoid Heavy Use While Charging

Avoid playing games or running heavy apps while charging, as this may cause the device to heat up, which can negatively impact battery performance and long-term health.

4. Do Not Charge in High-Temperature Areas

Ensure the phone is charged in a well-ventilated and relatively cool place. Charging in a hot environment may raise battery temperature and reduce its efficiency over time.

5. Use Wireless Charging Wisely

The phone supports wireless charging, but it’s usually slower than wired charging. It’s best used when you don’t need a quick charge, such as during sleep or while working at a desk.

6. Clean the Charging Port Regularly

Dust or debris accumulation in the charging port can lead to slow charging or connection issues. Use a soft brush or a small cotton swab to gently clean the port when needed.

7. Avoid Using Uncertified Chargers

Using non-original or low-quality chargers may damage the battery or cause charging issues. It’s always better to use chargers from well-known and trusted brands.

8. Activate Power Saving Mode When Battery Is Low

If you're away from a power source, you can activate the power saving mode from system settings to extend battery life until you can recharge.

By following these tips, you can maintain the Xiaomi Mix Fold 4’s battery performance for the long term and ensure a safe, fast charging experience without compromising the device’s efficiency over time.

Conclusion

The Xiaomi Mix Fold 4 is an ideal choice for anyone seeking a fresh and advanced experience in the world of smartphones. It combines high performance, screen quality, and elegant design, along with excellent multitasking support and fast charging. Despite some challenges such as a high price or limited availability, the phone proves itself as one of the best foldable phones available in the market. With Xiaomi’s attention to detail, the Mix Fold 4 stands out as a device worth owning for anyone ready to move to the next level of smart, multitasking mobile use.