When Xiaomi Mi 9T came out: the full release chronology

The question of when exactly Xiaomi Mi 9T came out is often raised by those who are planning to buy the device in the secondary market or want to understand the relevance of the software. This smartphone became a real hit thanks to its bezelless screen without cutouts and bangs, which was rare for the flagship segment of the time.

Many users confuse the release dates of the Chinese version of the Redmi K20 and the international version of the Mi 9T. The time difference between their appearance was only a few weeks, but it was the global version that received the communication frequencies adapted for Europe and Russia and a set of pre-installed Google services. Understanding the exact release date helps determine the battery age and potential support period of the device with security updates.

In this article, we will take a look at the timeline of the launch of the model, the technical features that made it popular, and answer the most frequent questions of owners, you will learn why this phone is still considered one of the best in its class and what to look for when choosing.

Official release date and start of sales

The official global announcement of the Xiaomi Mi 9T smartphone took place on June 12, 2019, the event took place in London, where the company introduced the device as a premium solution of the middle and upper price segments. It is noteworthy that the Chinese counterpart, known as the Redmi K20, was introduced a little earlier – May 28, 2019 in Beijing.

The launch of the model in various regions of the world was undulating, with devices entering retailers and online platforms in Europe and Russia in late June and early July 2019, which is considered the actual beginning of commercial operation of the model in the international market.

For those who have followed the industry, the Mi 9T's release came as a surprise: The Redmi brand was expected to remain budget-friendly, but renaming the Redmi K20 flagship to the Mi 9T for the global market raised the status of the lineup.This allowed Xiaomi to compete with more expensive brands by offering flagship specs at below market price.

Differences between Redmi K20 and global version

While technically the Redmi K20 and Mi 9T are the same device, there are important software and hardware differences between them. The global version received a modified logo on the back and box, as well as a different color scheme. While the Chinese came in Carbon Black, Flame Red and Glacier Blue, the globalist was often delivered in shades of Midnight Black, Pearl White and Ocean Blue.

From a software perspective, the difference was the set of pre-installed apps and LTE frequency support. The China version did not have Google’s default certification and required manual installation of services, while the Mi 9T came with the full Google Play Services package out of the box.

⚠️ Note: When buying a device from hand, be sure to check IMEI-If the system displays a Redmi model K20, The seller claims that this is a global version of the Mi. 9T, It is possible that the device has been re-flashed or is a Chinese version with global firmware installed, which can cause problems with notifications and banking applications.

Also worth noting are the differences in network support.The global version of Mi is also worth noting. 9T Supports a wider range of frequencies LTE (B1, B2, B3, B4, B5, B7, B8, B20), which ensures stability 4G-signal in rural areas and when roaming.Chinese version of Redmi K20 It may not support certain frequencies used by operators in Europe and Russia, for example, B20 (800 MHz).

Technical characteristics and design features

The heart of the device was the Snapdragon 730 processor (the Mi 9T Pro version used the Snapdragon 855), which provided high performance in games and everyday tasks, while remaining energy efficient, paired with up to 6 GB of LPDDR4X RAM and up to 128 GB of UFS 2.1 internal memory.

The design feature was the retractable front camera mechanism, which allowed the engineers to create a diagonal screen. 6.39 It's an inch without any cutouts. AMOLED Samsung's production provided deep black and saturated colors. 2340×1080 pixel.

The main camera consisted of three modules: the main sensor Sony IMX582 (48 MP) was complemented by a telephoto lens with optical zoom and ultra-wide-angle lens, the presence of a telephoto lens was rare for this price segment and gave a real advantage in portrait photography.

Below is a table with the main characteristics of the model:

History of operating system updates

Since the release of the Xiaomi Mi 9T has received several major updates to the Android operating system. Initially, the smartphone came with Android 9 Pie. Soon after the launch of sales, users began to receive updates to Android 10, which brought a new interface and improved gesture management.

The latest major update for this model was the Android 11-based shell. Xiaomi has fulfilled its promises to support the device, although many users counted on Android 12. However, given the age of the processor and the company’s policy in 2019, two major OS updates are a worthy result.

• 📱 Android 9 Pie: Basic version at the time of release, stable operation of all components.
• 🚀 Android 10: Improved navigation, dark theme and new privacy settings.
• 🔒 Android 11: Final major update that brought bubbles and improved access control to the microphone and camera.

While the Android major version is ending, the device continues to receive security patches. Users can update the firmware themselves through the Settings menu → About Phone → System Update to get the latest patches of vulnerabilities.

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To extend battery life on older versions of Android, turn on Battery Savings mode in the background for rarely used applications. This will reduce the load on the processor and reduce heating.

Typical problems and their solution

Like any popular model, the Mi 9T has its own “childhood diseases.” One of the most common problems owners face after a year or two of use is sticking the retractable chamber mechanism, and dust and small debris can get into the guides, preventing the module from fully exiting or closing.

Another common complaint concerns the fingerprint scanner embedded in the screen, which, after some firmware updates, can slow the unlock speed and the false positive rate can increase, due to the peculiarities of optical scanners of that generation.

⚠️ Attention: Do not forcefully push the retractable camera inside with your finger or foreign objects if it is stuck.This can damage the plume or break the plastic gears of the mechanism. Use a soft brush to clean the gap or contact the service.

Some users also note that the battery is rapidly deteriorating with the use of navigation and games, a natural process for lithium polymer batteries, especially since it has been several years since its release, and that replacing the battery solves the issue of autonomy.

Should I buy the Mi 9T at this time?

Buying the Xiaomi Mi 9T today only makes sense in the secondary market and subject to an attractive price tag.The device still looks modern thanks to a bezel-less screen and glass back.For a user who needs a phone for calls, instant messengers and video watching, its power Snapdragon 730 is still enough.

However, it is worth considering the lack of updates to new versions of Android and the potential wear of the battery. If you are an avid mobile gamer, the processor can no longer pull heavy games at high settings as the new budget players of 2026-2026.In addition, the lack of a 3.5 mm connector in some regions (although in the Mi 9T it is, unlike many modern models) and stereo speakers (monophone sound) can be a minus.

As a second phone or device for a child, Mi 9T — It's a great option. AMOLED-The screen protects the eyes, and the compact dimensions are convenient for one hand, the main thing is to carefully check the state of the battery and the mechanism of the camera before buying.

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Xiaomi Mi 9T remains relevant due to its unique design without cutouts and high-quality screen, but requires a thorough check of the battery and camera when buying used.

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