Xiaomi Mi 9 SE: official release date, key features and why it became a cult

Xiaomi Mi 9 SE is still one of the most talked about models in the Mi lineup, despite the fact that it has been several years since its release, the device became a unique combination of compact body, flagship characteristics and affordable price, which set it apart from the competition. But when exactly on February 20, 2019, Xiaomi officially introduced this model, and why was the release date a turning point for the brand?

In this article, we will not only look at the timeline of the Mi 9 SE, but also analyze how it fits into the company’s strategy, what technologies debuted with it, and why even today it is being discussed in the context of the “perfect compact smartphone.” You will learn about the nuances of the first announcement, regional sales features, and how the model relates to modern standards.

Official release date Xiaomi Mi 9 SE: chronology of events

The date of February 20, 2019 was a landmark for Xiaomi: it was on this day at a press conference in Beijing that the company simultaneously presented three models - Mi 9, Mi 9 SE and Mi 9 Transparent Edition. However, the Mi 9 SE stood out: it was the first smartphone of the Mi series with the prefix SE (Special Edition), which emphasized its unique status.

Interestingly, the announcement took place as part of a large-scale event dedicated to the 9th anniversary of the brand (hence the number “9” in the name of the line). Mi 9 SE was positioned as a “compact flagship” – a response to users tired of bulky gadgets. The first sales in China started on February 22, 2019, and the global release took place in March of the same year. In Russia, the model went on sale in early April 2019 at a price of about 25 000 rubles.

• 📅 February 20, 2019 – official announcement at the presentation in Beijing.
• 🇨🇳 February 22, 2019 – start of sales in China.
• 🌍 March 2019: The start of global supply.
• 🇷🇺 April 2019 – Entering the Russian market.

Importantly, the Mi 9 SE was the first Xiaomi smartphone to feature a triple main camera in a compact body, a groundbreaking move given that even rival flagship models (such as the Samsung Galaxy S10e) offered only dual cameras in a similar form factor.

The Mi 9 SE: Why it was ahead of time

At the time of the release, the Xiaomi Mi 9 SE offered specs that today seem standard, but in 2019 were breakthrough for the compact smartphone.

• 📱 Display: 5.97" Super AMOLED permittingly 2340×1080 (FHD+), support HDR.
• 🔋 Processor: Qualcomm Snapdragon 712 (8 cores, 10 nm) – the world’s first smartphone on this chipset.
• 📷 Camera: triple module (48 Sony MP IMX586 + 13 Wide-angle MP + 8 MP telephoto) with optical zoom 2×.
• 🔄 Memory: 6 GB of RAM and 64/128 GB ROM (without support for microSD cards).
• 🔌 Charging: Quick Charge 4+ (18 watts), wireless charging was missing.

The Mi 9 SE was the first Xiaomi device to use the Sony IMX586 sensor with Tetra-cell technology (combining 4 pixels into 1 to improve light sensitivity), which allowed for 12 MP low-light photography, which was revolutionary for the mid-budget segment.

Although the Mi 9 SE was inferior in performance to the flagships on the Snapdragon 855, it offered better value for money, for example, its screen quality was equal to the Galaxy S10e, and the camera surpassed the iPhone XR in terms of modules and shooting flexibility.

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The Mi 9 SE was the first smartphone to feature a Snapdragon 712 processor, which was later used in dozens of other brands (e.g. Oppo Reno 2, Realme XT).

Mi 9 SE vs Mi 9 vs Mi 9 Lite: What's the difference?

The Mi 9 range included three models, and they are often confused, and let’s look at the key differences to understand why the Mi 9 SE has taken a separate niche:

• 📏 Size and weight: Mi 9 SE: 147.5×70.5×7.5 mm, 155 d. 9: 157.5×74.7×7.6 mm, 173 d. 9 Lite: 156.8×74.5×8.7 mm, 179 s.
• 🔋 Processor: Mi 9 SE: Snapdragon 712; Mi 9: Snapdragon 855; Mi 9 Lite: Snapdragon 710.
• 📷 Camera: Mi 9 SE Mi 9: triple camera (48 MP main module); Mi 9 Lite: triple camera, but with 48 MP Samsung sensor GM1 (worse than IMX586).

Mi 9 SE It was the only one in the lineup with a compact body and AMOLED-The Mi 9 offered better performance but was much larger, and the Mi 9 Lite saved on the processor and the camera array, SE-The version has taken a unique niche of the "golden middle".

⚠️ In the secondary market, Mi 9 is often confused. SE And the Mi 9 Lite, because of the similar names, and the main visual signature is that the SE The camera is vertical, and Lite - in the form of a drop.

Regional features of the release: where and when the Mi 9 SE appeared

Xiaomi Mi 9 Exit Strategy SE It was different from the company's approach to other models, and if the Mi 9 was focused on the global market from day one, it was a very different model. SE-The version was originally seen as exclusive to multiple regions:

• 🇨🇳 China: First sales February 22, 2019, priced from 1999 yuan (~19 000 ₽).
• 🇪🇺 Europe: Exit March 2019, price from 349 € (~27 000 ₽).
• 🇷🇺 Russia: official sales with 5 April 2019, price 24 990 ₽ (6/64 GB) and 27 990 ₽ (6/128 GB).
• 🇮🇳 India: May 2019 release priced at Rs 19,999 (~18 000 ₽).

In some countries (for example, in India) Mi 9 SE was sold under the name Mi 9 Special Edition to emphasize its uniqueness. In Russia, the model was officially supplied in three colors: blue (Ocean Blue), purple (Lavender Violet) and gray (Piano Black).

It is worth noting that in the United States Mi 9 SE The company was not officially sold due to problems with Qualcomm’s patent licenses. American users could only purchase it through “gray” importers, which often led to problems with warranty and support. 4G-network.

The relevance of the Mi 9 SE in 2026: is it worth buying today?

It has been more than 5 years since the release, but Xiaomi Mi 9 SE is still discussed on the forums and market of used equipment.

The following are the reasons why they are still buying:

• 🔹 Compact: one of the latest flagships with a diagonal < 6".
• 🔹 AMOLED-screen with excellent color reproduction and support HDR.
• 🔹 Camera: 48MP sensor still competitive in daytime.
• 🔹 Price: In the secondary market, the model can be found for 8000-12,000 ₽ (2026).

Cons (what to pay attention to):

• ⚠️ Processor: Snapdragon 712 loosely pulls modern games (e.g. Genshin Impact on mid-sets).
• ⚠️ Battery: capacity of 3070 mAh today is considered small, and battery wear for 5 years can reach 30-40%.
• ⚠️ Updates: latest version MIUI — 12.5 (based on Android 11). No new firmware will be available.
• ⚠️ 5G: No support for fifth generation networks.

If you need a second smartphone for calls, social media and memory photos, the Mi 9 SE is a great option, but for gaming, multitasking or long-term autonomy, it’s better to consider more modern models (for example, the POCO X5 or Redmi Note 12 Pro).

⚠️ Note: Mi 9 counterfeits are often found on the market SE The original model has an infrared port (at the top of the case), NFC (In the Russian version and supports Quick Charge 4+. Check these details when buying!

Frequent Mi 9 SE problems and how to solve them

Like any smartphone, the Mi 9 SE has typical "diseases" that manifest over time, and here are the most common ones and ways to treat them:

• 🔋 Fast battery discharge: Reason: battery wear or application background activity. Solution: calibrate the battery (discharge to 0% and charge to 100% without interruption) or replace it with a new one (cost) ~2 000 ₽).
• 📵 Network problems 4G: Reason: outdated firmware or damage to the antenna module Solution: Update the software to the latest version MIUI or reset network settings (Settings) → SIM-maps and mobile networks → Resetting settings).
• 🎯 "Yellow Spots on Screen: Cause: Burning out of organic LEDs (typical for AMOLED After 3-4 years of use, the solution: reduce the brightness of the screen or replace the display (~5 000 ₽).
• 🔊 Quiet speaker: Cause: clogging of the speaker grille or software constraints. Solution: clean the hole with a soft brush or turn on Mi Display mode → Improvement of sound.

If your Mi 9 SE is getting hot, check the CPU boot in Settings → About Phone → System Status. Often background processes or viruses are causing overheating. Factory resetting (Settings → Additional → Recovery and Reset) will help in the extreme case.

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To extend the life of the Mi 9 SE battery, avoid charging to 100% and discharging below 20%, the optimal range is 30-80%, which will reduce battery wear by 30-40% per year.

FAQ: answers to popular questions about Xiaomi Mi 9 SE