Xiaomi smartphones have long been popular for their combination of affordable price and impressive specs on paper. However, behind the bright numbers in specs and aggressive marketing, there are systemic problems that make the brand’s devices far from perfect. In this article, we will not talk about subjective preferences, only about proven technical shortcomings, confirmed by tests, user reviews and independent research.
From cheating on processors in budget models to software bugs that haven't been fixed for years -- to see why even Xiaomi's flagship devices often disappoint their owners. Spoiler: it's not just MIUI, as you might think. We analyzed data from DXOMark labs, reliability reports from Counterpoint Research, and return statistics from major retailers -- and here's what we found.
1. CPU cheating: why your Xiaomi is running slower than it should
One of Xiaomi’s most controversial practices is using different versions of processors in the same model without notifying customers, such as the Redmi Note 11 Pro could install both the Snapdragon 695 and the weak Helio G96 — with the box and the official website indicating only the first option, the difference in performance between these chips is as high as 30-40% in synthetic tests.
But that’s not all. In 2022, independent tests revealed that Xiaomi artificially slows down processors in budget models after several months of use. For example, the Redmi 9A on the Helio G25 after 6 months of operation showed results in AnTuTu 15-20% lower than when it was first turned on – for no apparent reason (no trottling from overheating, the battery is normal).
- 🔍 How do you test your chip? Install it. CPU-Z Compare the processor model to the official specification.
- ⚖️ Legal consequences: In the EU and the US, the brand has already received fines for such actions (for example, a lawsuit from the Italian Competition Authority in 2021).
- 📉 Why is it done? To make it cheaper to produce lots for different regions, while keeping marketing statements.
⚠️ Note: If you buy Xiaomi from unofficial stores (such as AliExpress), the probability of getting a lightweight version of the processor increases to 60% according to GSMArena.
MIUI: not just firmware, but an experiment on users
The MIUI branded shell has long been a household name for Android enthusiasts, but the problem isn’t just intrusive advertising (which Xiaomi promised to remove in 2020, but never did) but systemic instability.
According to XDA-Developers, 28% of Xiaomi owners experience critical MIUI bugs in the first 3 months of use.
- 📱 Spontaneous reboots (especially on Snapdragon models) 8 Gen 1/2).
- 🔋 Instant battery discharge due to background activity of system processes (e.g. com.miui.analytics).
- 📶 Network problems: the phone is losing" 4G/5G Refuses to connect to Wi-Fi after the update.
But the most frustrating part is the lack of feedback: Xiaomi has been ignoring user bagreports for months, for example, a black screen bug in Poco F4 calls existed from June 2022 to March 2023, despite hundreds of complaints on forums.
| Xiaomi model | MIUI's critical bug | Term of existence (month) | Status of corrigendum |
|---|---|---|---|
| Xiaomi 12 Pro | Camera overheating when recording 4K | 8 | Corrected to MIUI 14.0.5 |
| Redmi Note 11 | Involvement of mobile data | 11+ | Not corrected |
| Poco X4 Pro | No sound in the headphones after the update | 5 | Corrected to MIUI 13.1.4 |
| Xiaomi 13 Ultra | Green hue on the screen at low brightness | 4 | Corrected to MIUI 14.0.3 |
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Before buying Xiaomi, check out reviews on 4PDA or XDA for the past 2 months – often new bugs appear after global MIUI updates.
3 Cameras: beautiful numbers, horrific photos
Xiaomi’s marketing likes to brag about megapixels and collaborations with Leica, but the real-world quality of the shot is often disappointing. According to DXOMark tests (2023), even flagship models are 15-20% behind the competition in key scenarios:
- 🌃 Xiaomi 13 Pro loses Google Pixel 7 Pro in detail by 30% in low light.
- 🎥 Video: Artifacts on recording 8K, autofocus "breathing" in 4K/60fps (The problem is relevant for Xiaomi 12S Ultra).
- 👤 Portraits: Blurring algorithms often misread object boundaries (e.g., eating away hair or ears).
But the biggest problem is sample mismatch, and the photos Xiaomi shows in presentations are often taken on hand-tuned prototypes, and on production devices, the Xiaomi 13 Ultra performs 40% worse on Camera Lab tests.
⚠️ WARNING: If you buy Xiaomi for the camera, be sure to check out real samples on YouTube (channels) MKBHD or TechAltar – brand marketing videos greatly exaggerate the possibilities.
Why Xiaomi can't fix the cameras?
4. Batteries: Fast charging vs. rapid degradation
Xiaomi prides itself on record charging speeds (up to 210W in the Redmi Note 12 Pro+), but there’s a downside: batteries fail 2-3 times faster than competitors. Tests by NotebookCheck showed that after 500 charging cycles, Xiaomi’s battery capacity drops by 30-40%, while Samsung’s or iPhone’s only by 15-20%.
Reasons:
- ⚡ Aggressive algorithms: Fast charging heats up battery to 45-50°C, which destroys lithium-polymer elements.
- 🔋 Cheap components: Xiaomi saves on charge controllers and thermal paste (iFixit autopsies confirmed this).
- 📉 Cycle cheating: Manufacturer claims "1000 “Cycles” but tests show degradation after 300-400.
Another trick: Xiaomi artificially limits battery capacity after 1-1.5 years of use. For example, the Redmi Note 10 Pro showed real capacity of 3800 mAh in ##4636## a year later instead of the stated 5020 mAh - and this when used carefully!
Turn off ultrafast charging (set the limit in Settings → Battery)
Do not charge above 80% (use Optimized Charging mode)
Avoid overheating (do not play games while charging)
Calibrate every 3 months (discharge to 0% and charge to 100%)
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5. Updates: Promises vs. Reality
Xiaomi likes to talk about "long-term support," but in practice it's different.
- 📅 Xiaomi Mi 11 (2021): 3 years of Android updates promised, but MIUI 14 was the last (released in 2023m).
But the worst of all are forced updates that break functionality, for example, after upgrading to MIUI 14 on the Xiaomi 12T Pro, navigation gestures stopped working, and some Bluetooth headphones lost support on the Redmi K50.
⚠️ Note: If your Xiaomi is 2 years old, don’t install new versions. MIUI In the first 2 months after release - wait for feedback on stability. Returning old firmware is often impossible without unlocking the bootloader.
6.Build quality: why Xiaomi breaks down more often than competitors
According to the service centers (counterpoint research report, 2023), Xiaomi leads in the number of warranty repairs among the top-5 Brands, the main problems:
- 📱 Screens: AMOLED-Redmi and Poco panels often suffer from burn-in. 8-10 months.
- 🔊 Speakers: At Xiaomi 12/13 Series of speakers begin to wheez at volume above 70% cheap-membrane.
- 📶 Antennae: Problems with signal reception (especially) 5G) because of savings on copper toll tracks.
But the most telling example is the Xiaomi 12S Ultra scandal, wherein 3 months after the release, 12% of owners (according to Weibo) had cracks in the back panel due to poor-quality glue between the glass and the metal frame, Xiaomi refused to recognize this as a marriage and offered repairs for money.
| Model | Typical breakdown | Date of occurrence (month) | Cost of repair (₽) |
|---|---|---|---|
| Redmi Note 11 Pro | Screen detachment | 6-8 | 5 000 - 7 000 |
| Xiaomi 12 | Crunchy dynamics | 4-5 | 3 500 - 4 500 |
| Poco X3 Pro | Overheating and shutdown | 3-4 | 8,000 (fee swap) |
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If you’re taking Xiaomi for a long time, choose models with a metal body (such as the Xiaomi 13T) – they’re less prone to physical defects than glass or plastic.
7 Brand Politics: Why Xiaomi is Not Trustworthy
Besides technical issues, Xiaomi has system issues with customer attitudes:
- 📦 Cheating with a complete set: In 2022, Xiaomi sold the Redmi Note 11 without charging in the box, although the site listed the full set.
- 💰 Hidden payments: B MIUI there are pre-installed services (e.g. Mi Credit) that sign users up for paid services without explicit consent.
- 🌍 Double standards: Xiaomi is making models with better screens and cameras than the global market in China (compare Xiaomi 13 for China and Europe).
But the most cynical aspect is the attitude to the warranty: according to Rospotrebnadzor, in 2023 Xiaomi ranked 2nd among brands in terms of the number of warranty repair refusals (after Realme).
- "Humidity" (even if the phone is not sinking)
- "Mechanical damage" (in the absence of visible defects).
- Unofficial firmware (although the phone never unlocked).
8.Alternatives: Where to Run from Xiaomi
If you’re disappointed with Xiaomi but don’t want to overpay for a Samsung or iPhone, consider these options:
| Brand | Model | Advantages over Xiaomi | Price (from/to, ₽) |
|---|---|---|---|
| Motorola | Moto G84 | Pure Android, 4 Years of Updates, OLED-screen | 25 000 - 30 000 |
| Pixel 7a | Best camera in the segment, 5 years of updates | 40 000 - 45 000 | |
| Nothing | Phone (2) | Unique design, stable software, 3 years of updates | 60 000 - 65 000 |
| Realme | GT Neo 5 | Fast charging without battery degradation, 144Hz screen | 35 000 - 40 000 |
If you want to stay in the Xiaomi ecosystem, choose the Xiaomi T series (such as the Xiaomi 13T) – they are assembled in Europe and have fewer quality issues.
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Before buying any smartphone, check it in the GSMArena database for quality scandals. For Xiaomi, this is especially true - the brand often changes components suppliers without notice.