Xiaomi Redmi S2 – the year of release, specifications and is it worth buying in 2026?

Why is it important to know the year of the Redmi S2?

Xiaomi Redmi S2 (also known as Redmi Y2 in some regions) remains a popular choice in the aftermarket due to its balance of price and functionality. However, before buying a used device, it is critical to understand which generation it belongs to – this directly affects firmware support, compatibility with modern applications and overall durability.

This model was announced as part of Xiaomi’s budget smartphone lineup, but its relevance in 2026 raises questions: in this article, we will analyze the exact year of release, key technical nuances, compare it with analogues and give a checklist to check the device before buying, special attention to security and MIUI support, this will help to avoid disappointment.

If you think of the Redmi S2 as a backup phone, a child’s first smartphone, or a budget solution for basic tasks, you’ll find an objective assessment of its capabilities and limitations.

Xiaomi Redmi S2 release year: chronology and context

The Xiaomi Redmi S2 was officially unveiled on May 10, 2018, at an event in China, one of the first models in the Redmi S series to target markets with a focus on the front camera and selfie (hence the “S” in the name).The device began production almost immediately after the announcement, and global deliveries began in June 2018.

Interesting fact: In India, the smartphone was sold under the name Redmi Y2 — with the same hardware, but with a focus on young audiences, a strategy of dubbing names typical of Xiaomi in 2017-2019, when the company was actively exploring new markets.

In terms of relevance in 2026, the Redmi S2 is part of the Snapdragon 625-based smartphone generation, a chip that was mid-budget at the time of release but is considered obsolete today, and it’s important to consider this when evaluating performance and compatibility with modern applications.

Redmi S2 technical specifications: what remains relevant and what is outdated

Let's look at the key parameters of the device that directly affect the user experience in 2026, and for convenience, we put the data in a table with notes on relevance:

Critical: The smartphone doesn't officially support MIUI 13 and is newer due to hardware restrictions.The latest stable firmware is MIUI 12.5 (based on Android 10), meaning no security updates after 2022, making the device vulnerable to new threats.

• 🔋 Battery: 3080 mAh — that's very low today, especially considering the energy efficiency of the Snapdragon 625. In real use, it lasts 1 day at moderate load.
• 📶 Network: Support 4G (LTE Cat. 7), but missing 5G And modern Wi-Fi 6 standards, and some regions may have coverage issues.
• 🔒 Security: No hardware encryption (as in Xiaomi’s newer models), which increases the risk of losing your device.

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Before buying, check the MIUI version through Settings → About Phone. If the seller claims that the Android 11+ smartphone is either custom firmware (risky) or a hoax.

Comparison with modern budget smartphones Xiaomi (2023-2026)

To objectively evaluate the Redmi S2, compare it with current budget models Xiaomi in the same price segment (up to 10 000 rubles in the secondary market), the main differences are in performance, software support and cameras.

As you can see from the table, even Redmi. 9A (2020) offers more relevant software and better optimization, despite similar price tags. S2 today:

• 💰 Price: 20-30% cheaper than analogues.
• 🔧 Repairability: Easy to find parts (screens, batteries) and craftsmen.
• 📱 Design: Compact body (160.7 × 77.3 × 8.1 mm) compared to modern “shovels».

But there are also critical shortcomings:

⚠️ Note: The smartphone does not support file system encryption FBE (File-Based Encryption, which makes it vulnerable to data theft when physically accessing a device, is relevant if you store photos of documents on your phone or use banking applications.

How to verify the authenticity and condition of the Redmi S2 before buying: checklist

When buying a used smartphone, the risks of getting a cat in a bag are high. Use this checklist to minimize them. Pay special attention to the battery and software parts, which are often the source of problems.

We further recommend:

1. Check the serial number on the official Xiaomi website (link). If the device does not pass verification, it is either a fake or a gray import with a broken warranty.
2. Check the condition of the connectors: connect the charger and headphones, if the cable is only held in a certain position, the connector is worn out.
3. Run a benchmark (such as AnTuTu or Geekbench) and compare the results with the benchmark for the Snapdragon 625 (~90,000 points in AnTuTu 8).A significant deviation (more than 20%) indicates overheating or wear of the chip.

Firmware Warning: Some vendors install custom firmware (e.g. LineageOS) to hide the real state of the device. Check this in Settings → About Phone → MIUI Version. Official versions are in the format of V12.5.1.0.XXX (where XXX is regional code).

The current problems of the Redmi S2 in 2026: what breaks most often

According to service centers and user reviews, the Redmi S2 has typical “diseases” that manifest after 3-5 years of operation.

1. Battery wear: Capacity drops to 60-70% of the original after 2-3 years of active use. Symptoms - rapid discharge (from 100% to 0% in 3-4 hours), sudden shutdowns with 20-30% of charge.
2. CPU overheating: The Snapdragon 625 is prone to trottling when you're loaded, and you can see that in games or when you're recording 1080p video.
3. Wi-Fi problems: Some devices may have a connection to 5GHz networks or routers with WPA3 encryption.
4. Screen burnout: AMOLED-There are no panels here, but some instances have "shadows" from static interface elements (for example, navigation panels).
5. GPS errors: The module loses its signal in urban environments, especially when using navigators (Yandex.Maps, Google Maps).

Most of these problems are solvable, but require investment:

• 🔋 Replacing the battery will cost 1,500-2,500 ₽ (original or qualitative).
• 🔧 Repair of Wi-Fi module – 2000–3,000 ₽ (More often than not, the antenna cable is to blame).
• 📱 Screen replacement: 3,000–4,500 ₽ (depending on the quality of the matrix).

⚠️ Warning: If the smartphone has been “dropped” or exposed to extreme humidity, corrosion on the board may not appear immediately, but after a few months.

Redmi S2 Alternatives in 2026: What to Buy Instead

If Redmi S2 If you are not satisfied with the characteristics or condition, consider these alternatives in the same budget (up to 10 000). ₽ secondary-market):

If the budget allows you to stretch to 12,000-15,000 ₽, I'll have to look at it:

• 📱 Redmi Note 10 (2021) — AMOLED-screen, Snapdragon 678, support MIUI 14.

If you want maximum durability, look for models with Snapdragon 6xx or Helio G8x/G9x processors – they are better optimized for modern tasks and get updates longer.

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The Redmi S2 is only for basic tasks: calls, instant messengers, low-resolution video, and for everything else, consider models no older than 2020.

FAQ: Frequent questions about Xiaomi Redmi S2