The question of what year Xiaomi Redmi 4X is often asked by users planning to buy a budget device in the secondary market or looking for compatible parts. This model has become a real bestseller in the mid-range, offering a metal case and autonomy at a cost of "consumer". Understanding the exact release date helps to assess the relevance of the hardware platform and the potential risks of buying.
The smartphone was introduced in early 2017, which means the mobile industry is quite mature, but thanks to the successful choice of Qualcomm processor, the gadget has long been in demand. If you think of it as a second phone or for simple tasks, knowing the exit chronology will help you correctly assess its condition and the residual battery life.
In this article, we will discuss in detail the time frame of the model, the technical nuances of various modifications and the reasons why this smartphone is still mentioned in the discussions, we will analyze how relevant its characteristics are in the current realities and whether it is worth contacting a device released several years ago.
Official release date and regional features
The device was unveiled on February 28, 2017 in China, a date widely considered the official birthday of the model, and was initially only available in the domestic market of China, where it was sold under the Redmi brand with the prefix 4X. The global version, adapted for international markets, including Russia, appeared a little later, in March-April of the same year.
The difference in release dates between China and the rest of the world was typically one to two months, a standard practice for Xiaomi to debug software and fix critical bugs before mass shipments abroad, and in Russia, the device became widely available in retailers and online stores by mid-spring 2017.
It's important to note that different modifications could have been made in parallel at different plants, so when you ask what year the particular one is in your hands, you need to look not only at the announcement date, but also at the production date indicated on the box or on the service menu, and the range can be up to a year.
⚠️ Note: When buying a used device, pay attention to the date of activation of the warranty or the first turn on. If the smartphone is “reclining” (released in 2017, activated in 2019), the life of its lithium polymer battery could degrade even without active use.
Technical specifications and hardware platform
The device was based on a 28-nanometer Qualcomm Snapdragon 435 processor, a great balance between performance and energy efficiency for its time, and an eight-core chipset that provided a smooth interface and allowed popular games to run on medium graphics settings.
The screen of the smartphone is made by technology IPS 5-inch diagonal and resolution HD (1280x720 The pixel density was 296 ppi, which provided a clear picture without the effect of "grain". 2.5D, This was a rare event for the budget segment in early 2017.
The table below provides key specifications that will help identify the model and distinguish it from its predecessors or competitors:
| Parameter | Meaning | Note |
|---|---|---|
| Processor | Snapdragon 435 | 8 Cortex-A53 cores |
| RAM | 2/3/4GB | Type of LPDDR3 |
| Built-in memory | 16/32/64GB | MicroSD slot up to 128GB |
| Main camera. | 13 MP | Aperture f/2.0, PDAF |
| Battery | 4100mAh | Support for Quick Charge 2.0 |
The fingerprint recognition system deserves special attention, because the scanner is located on the back and is fast, and in 2017 it was one of the best biometrics implementations in its class, which was often a decisive factor in choosing between Xiaomi and competitors.
Memory versions and modification differences
During production, the model was released in several memory configurations, which often confuses customers. The basic version offered 2 GB of RAM and 16 GB of internal memory, which was enough for basic tasks: calls, messengers and navigation, but multitasking was limited.
The popular 3/32GB version was the middle ground, with more RAM in the background, and 32GB of built-in storage enough to install the required set of programs and a small media archive, which was the most common modification on sale in Russia.
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When choosing a memory version, keep in mind that the system and pre-installed applications take up about 4-5 GB. Therefore, the 16 GB version actually offers the user only about 10-11 GB of free space.
The top-end 4/64GB version came later and was meant to extend the model's life on the market.The availability of 4GB of RAM made it easier for the smartphone to cope with heavy social media updates, which have become increasingly demanding with each year.
- 📱 2/16 GB: Basic option for calls and easy tasks.
- 🚀 3/32 GB: Optimal balance of price and performance.
- 💎 4/64 GB: Maximum configuration for demanding users.
All versions support the installation of two SIM-But the slot was hybrid: you could use either two SIMs or one SIM and a memory card, a limitation that was common to many devices of the period.
Software and Relevance of Updates
At the time of release, the smartphone was running a MIUI 8 shell based on Android 6.0 Marshmallow. It was stable and optimized software, and subsequently the device received an update to MIUI 9 and MIUI 10, based on Android 7.0 Nougat.
Unfortunately, this is where the official support for major Android updates for the model ended, with the final firmware version being MIUI 11, which is based on the same Android 7.0. The lack of a transition to Android 8.0 and higher limits the installation of some modern applications that require new API versions.
Can I install a custom firmware?
Users who own this device today are faced with the fact that modern versions of popular applications (YouTube, bank clients, cards) may not work correctly or require OS versions that are newer than Android 7.0.
⚠️ Note: Some banking apps may stop working on Android 7.0 due to security requirements. Before buying a used device, check if the fintech services you need are running on this version of the OS.
Design, Materials and Ergonomics
The Redmi 4X's appearance was one of the factors behind its success. Unlike many plastic competitors, it had an all-metal aluminum alloy body. The metal not only improved the tactile experience, but also contributed to better heat removal from the processor.
The back cover had the characteristic antenna inserts on top and bottom, which was standard for metal smartphones of the time. Interestingly, in some regions, a version with a back cover that mimics the texture of the wood, which added personality to the device.
The ergonomics of the 5-inch body are rated high.The smartphone is comfortable in the hand, easy to control with one hand.The device weighs about 165 grams, which is a great indicator for a 4100 mAh battery.The metal body, however, makes the phone slippery, so using a case is almost necessary.
☑️ Checking the condition of the redmi used 4X
Camera and multimedia capabilities
The main camera module received a Sony IMX258 sensor with a resolution of 13 megapixels. Phase AF (PDAF) allowed you to take pictures quickly and clearly, the camera gave a decent result for its class during the day, although the dynamic range was limited.
In low light conditions, the quality of the images dropped markedly, noise and lubrication appeared, a typical situation for budget sensors in 2017, the 5MP front camera was designed for video calls and simple selfies, without pretending to be artistically valuable.
Video playback is limited to Full resolution HD (1080p) at 30 frames per second. HD-resolution does not allow to fully evaluate the high-resolution picture, but the margin of brightness and viewing angles IPS-The matrix is enough to view content in transport.
- 📸 Main camera: 13 MP, f/2.0, PDAF.
- 🤳 Front camera: 5 MP, f/2.2.
- 🎥 Video: Recording 1080p@30fps, 720p@30fps.
Autonomy and charging issues
The model’s main trump card was a 4100 mAh battery. In combination with the energy-efficient Snapdragon 435 processor and low-resolution screen, the smartphone showed outstanding results of autonomy. In mixed-use mode, the device easily withstands two days of operation.
Support for Quick Charge 2.0 fast charging technology allowed for faster power recovery than conventional chargers, but it often included a standard power supply that did not support accelerated charging, requiring the purchase of a separate adapter.
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Redmi 4X remains one of the leaders in autonomy among older models due to the successful combination of a 4100 mAh battery and HD-A screen that consumes less energy than a full screen. HD analogue.
After years of use, battery capacity inevitably declines, and if you buy a used one, be prepared for the fact that the actual capacity can be 70-80% of the declared one, in which case only a replacement battery will help, the benefit of spare parts for this popular model is easy to find.
Cost in the secondary market and the feasibility of buying
Today, Xiaomi Redmi 4X can be found exclusively in the market of used equipment or in the remains of inventory. The cost of the device is symbolic and depends on the condition of the case, configuration and memory.
Buying this smartphone makes sense in several cases: as a first phone for a child, a device for navigating in a car, a phone for the elderly or as a spare device. As a primary smartphone in 2026-2026, it will no longer be able to meet the needs of an active user due to obsolescence.
When choosing, be sure to check IMEI-code on the manufacturer's website or in special services to make sure that the device is not wanted and has no hidden locks. It is also worth checking the operation of communication modules, since repair (motherboard) is not economically feasible.