Redmi Note 4 and 4X: full comparison and key differences

Introduction to the world of Xiaomi: why the confusion did not arise by chance

Many users face a serious dilemma when buying a used or budget smartphone: how to choose between Redmi Note 4 and Redmi Note 4X? Externally, these devices are almost identical, they have a similar metal body and design, which often misleads even experienced users. However, under the hood there are fundamental differences that directly affect the performance, runtime and relevance of the device in current realities.

Xiaomi released these models at different times and for different markets using different platforms. It is important to understand that Redmi Note 4 (India and China version) is based on MediaTek processor, while the global version Redmi Note 4X I received the chip from Qualcomm. This difference determines all further characteristics of the device, from stability to shooting quality. A mistake when choosing can cost you unnecessary nerves when using programs.

The heart of a smartphone: MediaTek processors versus Qualcomm

The most critical difference lies in the computing power architecture. At the core Redmi Note 4 lies the chipset MediaTek Helio X20 (or X25 in some revisions), which is a ten-core solution. Despite the large number of cores, this platform often suffers from overheating and unstable performance in heavy tasks. At the same time, Redmi Note 4X equipped with a processor Qualcomm Snapdragon 625, which has become a legend thanks to its balance between performance and energy efficiency.

If you plan to play demanding games or often run multiple applications at the same time, Snapdragon 625 will show itself much better. Not only does it ensure smoother operation of the interface, but it also practically does not heat up even under prolonged use. MediaTek in this pair often turns into a “stove”, requiring active cooling to maintain stable clock speeds.

• 🔥 Overheating syndrome: MediaTek Helio X20 is prone to throttling (lowering frequencies) when heated, which leads to lag.
• 🚀 Energy efficiency: Snapdragon 625 is manufactured using 14nm process technology, delivering less power consumption.
• ⚡ Stability: The global version on Qualcomm works more predictably over a long period of time.

It is worth noting that software optimization for Qualcomm processors is often higher, since their drivers are more mature. This means that the MIUI system will work out of the box more responsive to Redmi Note 4X. You'll probably notice a difference in the smoothness of the animations the first time you turn on the device.

Screen and display: OLED vs IPS matrices

The second most important aspect that sets these models apart is the display. Redmi Note 4 uses classical IPS matrix with a resolution of 1920x1080 pixels. This was a standard solution of that time, providing good viewing angles and color reproduction, but not distinguished by deep blacks. However Redmi Note 4X got a more modern screen with technology AMOLED (in some versions) or improved IPS, which radically changes the perception of the picture.

Thanks to the use AMOLED technology, screen Redmi Note 4X offers richer colors and, most importantly, true blacks. This allows you to save battery power when using dark themes. In addition, the brightness of AMOLED screens in the sun is usually higher, which makes reading comfortable in any conditions.

• 🎨 Color depth: AMOLED screens provide higher contrast images compared to IPS.
• 🌑 Energy Saving: Black pixels on an AMOLED screen are simply turned off without consuming any power.
• 📱 Protection: Both smartphones are protected by glass Gorilla Glass, but the screen build quality of the 4X is often higher.

It is important to note that when watching a video in the dark AMOLED May cause eye strain due to flicker (PWM) if you are sensitive to it. However, for most users, the benefits in color reproduction and contrast outweigh this disadvantage. You will get a brighter and richer experience when viewing content.

Autonomy and battery life

Both smartphones are equipped with 4100 mAh batteries, which is an excellent indicator for their class. However, the actual running time varies dramatically due to the efficiency of the processor. Redmi Note 4X thanks to the chip Snapdragon 625 capable of working up to two days with moderate use, whereas Redmi Note 4 with processor MediaTek often requires recharging in the evening.

The difference in energy consumption becomes especially noticeable with active use of 4G communications and navigation. The MediaTek processor consumes more power even when idle, which reduces the overall range. If you are often on the road, choose Redmi Note 4X will be a more rational solution for you.

⚠️ Attention: When purchasing a used device, be sure to check the health of the battery. Battery wear can completely negate the benefits of the Snapdragon processor, and then even Redmi Note 4X will not work for long.

• 🔋 Real stock: Redmi Note 4X holds a charge 20-30% longer under the same usage scenarios.
• ⚡ Fast charging: Both smartphones support the technology Quick Charge 3.0, which allows you to quickly replenish energy.
• 🔌 Standby consumption: MediaTek drains the phone much faster when it's in your pocket.

It is also worth noting that the cooling system in Redmi Note 4X is better designed, allowing the processor to operate at optimal temperatures for longer. This indirectly affects the longevity of the battery, since overheating is the main enemy of lithium-ion batteries. You'll get a more predictable experience using your device all day long.

Cameras and photo quality

Despite the fact that both smartphones have a 13-megapixel main camera, the quality of the images is different. IN Redmi Note 4 a sensor is used, which in poor lighting often produces a “noisy” picture. Redmi Note 4X received an improved image processing algorithm and a higher-quality module, which allows you to take pictures with fewer artifacts.

Processor Snapdragon has a built-in image processing module (ISP), which is superior to solutions from MediaTek in this segment. This means that the dynamic range is Redmi Note 4X wider, and colors are rendered more naturally. If you love photography, the difference will be noticeable to the naked eye.

• 📸 Night photography: Redmi Note 4X copes with low light much better.
• 🎥 Video recording: Video stabilization and detail are higher on Snapdragon.
• 🤳 Front camera: Both smartphones have a 5 MP camera, but the beauty algorithms on the 4X are softer.

For Redmi Note 4 support ended early, leaving users with outdated shooting algorithms. This is another argument in favor of a global version of the device.

What is MIUI and why is it important?

MIUI is Xiaomi's proprietary skin that sits on top of Android. It contains many features, but can also slow down older devices. The Redmi Note 4X had longer support for MIUI updates, providing security and new features longer than the Redmi Note 4.

Summary table of characteristics

For clarity, let’s compare the key parameters of both models in a single table. This will help you make a quick decision based on facts and figures rather than marketing claims. Pay attention to the differences in processors and screens, as these are the main differentiating features.

Characteristics	Redmi Note 4 (MediaTek)	Redmi Note 4X (Snapdragon)
Processor	MediaTek Helio X20	Qualcomm Snapdragon 625
Screen	IPS, 5.5 inches	AMOLED/IPS, 5.5 inches
Battery	4100 mAh	4100 mAh
4G support	Limited (varies by region)	Full (global frequencies)
Android version	Up to Android 7.0 (Nougat)	Up to Android 8.0 (Oreo)

As can be seen from the table, Redmi Note 4X wins in all key parameters, except for battery capacity, which is identical. Snapdragon 625 Not only is it faster, but it also supports newer versions of the operating system, which is critical for application security and compatibility. Choosing the version on MediaTek is justified only if you find it much cheaper and do not plan to actively use it.

⚠️ Attention: When purchasing, be sure to check the model by IMEI. Sellers often call Redmi Note 4 version on MediaTek, and Redmi Note 4X - global version. Make sure there is an "X" in the name or Snapdragon is listed in the specifications.

Final verdict: what to choose in 2026

To summarize, we can say with confidence that Redmi Note 4X is a more advanced and reliable device. The difference in the processor makes it much more relevant for modern tasks, be it instant messengers, social networks or light games. Qualcomm Snapdragon 625 is still considered one of the best budget chips ever, and that's no coincidence.

If you are considering buying a used smartphone, Redmi Note 4X - this is the only right choice. Version on MediaTek (usually just Redmi Note 4) has serious problems with heating and software support, which makes its purchase risky. You risk getting a device that slows down and runs out of charge quickly.

• ✅ Choose Redmi Note 4X for long-term use and stable operation.
• ❌ Avoid Redmi Note 4 (MediaTek), unless the price is several times lower and the device is not for simple tasks.
• 💡 Check IMEI before purchasing to make sure you have a Snapdragon processor.

Remember that the difference in aftermarket price between these models is often minimal, but the difference in performance is enormous. Don't skimp on ease of use. Redmi Note 4X will give you smooth operation, an excellent camera and a long battery life, which cannot be said about its “media” brother. Only the Snapdragon 625 version guarantees stable operation without overheating and lags for a long time.

Frequently asked questions (FAQ)

How to distinguish Redmi Note 4 from 4X visually?

Visually it is almost impossible to distinguish them, since the design is identical. The only difference may be the inscriptions on the back cover or box, but most often there are none. The only reliable way is to check the model in the phone settings or through the CPU-Z application, where the processor will be indicated.

Is it possible to install firmware from 4X on Redmi Note 4?

No, that's impossible. Firmware for versions on MediaTek and Snapdragon have different kernels and drivers. An attempt to install will result in the device being “bricked” (inoperable). The software is not compatible at the hardware level.

Which smartphone is better for gaming?

Definitely Redmi Note 4X with processor Snapdragon 625. It provides more stable FPS and doesn't overheat as much as MediaTek Helio X20 in version Redmi Note 4. For modern games, both smartphones are already outdated, but the 4X will handle them better.

Why does Redmi Note 4 get so hot?

Processor MediaTek Helio X20 uses an outdated process technology (20 nm), which is less efficient and prone to overheating. In addition, the power management algorithms in this platform perform worse, which leads to unnecessary heat generation even during simple tasks.

Is it worth buying Redmi Note 4X now?

If you need a cheap smartphone for calls, instant messengers and simple tasks, Redmi Note 4X may still be an option, but it's better to consider more modern models. However, if you choose strictly between these two, 4X is the uncontested leader.