Xiaomi Redmi Note 8 Pro is still a popular smartphone among users who appreciate performance and functionality at an affordable price. However, internal memory (64 or 128 GB) is often not enough for modern games, 4K video or bulk photo libraries. The solution is to install a microSD card, but not any one will do: the wrong choice can lead to brakes, write errors or even file damage.
In this article, we will discuss which microSDs are compatible with the Redmi Note 8 Pro, what to look for when buying (speed classes, UHS-I/A2 standards, brands), and how to avoid common errors. We will also compare top models from SanDisk, Samsung, Kingston and other manufacturers on the criteria of price, reliability and speed for specific tasks: video shooting, gaming or data storage.
Technical requirements: what supports the Redmi Note 8 Pro
The smartphone is equipped with a hybrid microSD slot + SIM (or two nano-SIMs, which means that you have to donate a second memory card to install it. SIM-The maximum supported volume is 256 GB (officially), but in practice many users successfully use 512 GB cards and even 1 TB (for example, SanDisk Ultra). 1TB). But there are nuances:
- 📱 File system: smartphone formats cards in exFAT (for volumes) >32 GB) or FAT32. The latter option limits the size of a single file to 4 GB – critical for video.
- ⚡ Recording speed: for video 4K@30fps class UHS-I U3 or V30, Otherwise, there will be lags and artifacts.
- 🎮 Games and applications: for installation APK The card needs standard support A2 (Accelerated work with small files).
Important: Redmi Note 8 Pro does not support UHS-II – faster cards (for example, Sony TOUGH-G UHS-II) will work at UHS-I speeds, there is no point in overpaying for them.
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If you plan to shoot video in 4K, check the U3 or V30 logo on the map – this is a guarantee of a minimum recording speed of 30 MB / s.
Speed classes: what do U1, U3, A1, A2 mean and how not to make a mistake
Marking on memory cards is not a marketing move, but real technical characteristics.
| Class/Standard | Minimum recording speed | What tasks are suitable for | Example of model |
|---|---|---|---|
| Class 10 (C10) | 10 MB/s | Photos, music, documents | Kingston Canvas Select Plus |
| UHS-I U1 | 10 MB/s | Full HD video, lightweight games | Samsung EVO Plus |
| UHS-I U3 / V30 | 30 MB/s | 4K video, heavy games | SanDisk Extreme Pro |
| A1 | 10 MB/s (IOPS 1500) | Applications, multitasking | Lexar Play |
| A2 | 4000 IOPS (reading), 2000 IOPS (write) | Games, Frequently Moving Files | SanDisk Extreme A2 |
Critical error: cards with a class below U3 are not suitable for shooting 4K video on the Redmi Note 8 Pro – the camera will give an error “Slow memory card”.
For games like Genshin Impact or Call of Duty Mobile, A2 is the optimal standard. It provides high random access speeds (IOPS), which is critical when loading textures and levels. A1 cards also work, but can slow down in dynamic scenes.
Top.-5 Memory cards for Xiaomi Redmi Note 8 Pro in 2026 year
We tested dozens of models and selected the best price/quality ratio for different tasks, all cards are tested for compatibility with the Redmi Note 8 Pro and are guaranteed by the manufacturer.
1. SanDisk Extreme A2 (128GB/256GB) – the best choice for gaming and 4K
Pros:
- ⚡ Read/write speed before 190/90 MB/s (real-world) ~160/80 MB/s).
- 🎮 Standard A2 — Perfect for gaming and multitasking.
- 🌡️ Resistant to temperature changes (-25°...+85°C).
Cons: the price is above average, but justified by reliability.
2. Samsung EVO Plus U3 (128 GB/256 GB) – optimal balance
Pros:
- 💰 Best Price/Speed Ratio (~130/60 MB/s).
- 📹 Supports 4K UHD full HD lagless.
- 🔄 5-Summer Guarantee (Most Competitors — 2-3 year-end).
Cons: There is no A2 standard, but for most tasks it is enough.
3. Kingston Canvas Go! Plus (128GB) - budget option for video
Pros:
- 💵 One of the cheapest cards with a class U3/V30.
- 🎥 Suitable for video shooting in 4K@30fps.
Cons: the recording speed decreases with long recording (up to ~40 MB / s).
4. Lexar Play (128 GB/256 GB) – for photographers
Pros:
- 📸 Optimized for serial shooting (buffer is not clogged).
- 🛡️ Water and impact-resistant (standard) IPX7).
Cons: Does not support A2 – not the best choice for gaming.
5. Netac Pro A2 (128GB) – Chinese flagship
Pros:
- 🏆 Speed is at SanDisk Extreme level, but cheaper.
- 🎮 Full support A2 and U3.
Cons: it is difficult to find in offline stores, the risk of running into a fake.
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For most users of Redmi Note 8 Pro optimal Samsung EVO Plus U3 (video/photo) or SanDisk Extreme A2 (games).
How to avoid counterfeiting: 5 signs of the original map
The microSD market is flooded with counterfeits, especially under the SanDisk and Samsung brands.
- Packaging: Official cards have sealed holographic stickers and a serial number, and counterfeits are often sold in crumpled or open blisters.
- Price: If SanDisk Extreme 128GB It's cheaper than 1500. ₽ — It's 100% fake. Compare prices on the official website.
- Software Verification: Use H2testw (Windows) or F3 (Linux/macOS) utilities to test real volume and speed.
- Logos: On the original cards, the inscriptions U3, A2 or V30 are laser-painted rather than painted (not erased with a nail).
- Place of purchase: avoid AliExpress, eBay and smaller online stores. Buy from Svyaznoy, M. Video, DNS or Ozon/Wildberries from trusted sellers.
Example of the test in H2testw:
Writing speed: 85.2 MB/s
Reading speed: 158.9 MB/s
Tested: 119.2 GB (OK)
No errors found.What happens if you use a fake card?
How to format a memory card in Redmi Note 8 Pro
A new card may not work properly if it is not formatted directly in your smartphone.
- Insert the card into the microSD slot.
- Go to Settings → Memory → Memory Map.
- Choose Format as internal (for application installation) or Format as portable (for file only).
- Confirm action. Attention: all data on the map will be deleted!
Important: If you choose formatting as internal memory, the card cannot be retrieved and used in other devices without completely erasing the data.
Buy a card with a class not lower than U3/A1
Check for authenticity (packaging, price, tests)
Insert into the microSD slot (if necessary, remove the second SIM).
Format in the settings of the smartphone
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To shoot video in 4K, it is recommended to format the card in exFAT (automatically selected at >32 GB), which will allow you to write files larger than 4 GB.
Frequent Mistakes and How to Avoid Them
Even with the right map, users are faced with problems.
⚠️ Note: If the smartphone does not see the memory card, check: 🔌 Is the card inserted correctly (contacts should be directed upwards). 🗑️ Is it formatted in FAT32/exFAT (NTFS unsupported!). 🔄 Try restarting your phone or inserting the card into another device to check.
Problem 1: The map is defined, but the games are not installed on it.
Solution: In the application settings (Settings) → Annexes → [play-name] → Memory) select the option to Move to SD-If you don't have an option, the card is formatted as a portable card (reformatted as an internal card).
Problem 2: When shooting 4K video, the error “Slow memory card” appears.
Solution: Your card is not U3/V30, replace it with a 30MB/s minimum write rate model (e.g. Samsung EVO Plus U3).
Problem 3: The map suddenly became "read-only."
Solution: Check the physical Lock switch on the adapter (if any). If the problem persists, the card fails (immediately copy the data!).
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If the card starts to "glutch" (it is self-mounted, slows down), try scanning it for errors through the PC using the chkdsk utility (command: chkdsk E: /f, where E is the letter of the disk).