Why Choosing the Right Memory Card Is Critical for Xiaomi Redmi
Xiaomi Redmi smartphones are some of the most popular on the market due to the price/quality ratio, but even the flagship models of the Note series or the model of the Xiaomi Redmi. POCO They often suffer from a lack of internal memory. In 2026, 4K-Video, heavy graphics games and photos in format RAW As the standard, microSD memory cards are no longer a luxury, they are a necessity, but not every card will work: the wrong choice can lead to brakes, write errors or even data loss.
In this article, we’ll look at all the criteria for choosing from format and speed class to compatibility with specific Redmi models (including the Redmi Note 13 Pro+, POCO X6 and the budget Redmi A3). You’ll also learn how to avoid counterfeiting, which brands are trustworthy, and why cheap cards with AliExpress can turn into a headache.
Card format: microSD, microSDHC or microSDXC?
The first thing to decide on is the type of memory card. All modern Xiaomi Redmi smartphones support the microSD format, but inside it there are three subcategories that determine the maximum volume:
- 📱 microSD (up to 2 GB) – outdated format, irrelevant for smartphones.
- 💾 microSDHC (4-32 GB) – suitable for budget models (Redmi) A1, Redmi 9A), But not enough for modern tasks.
- 🚀 MicroSDXC (64GB-2TB) is the best choice for most Redmis (starting with Note 8 and newer).
Important: Xiaomi Redmi Note 12 Pro+ and newer officially support cards up to 1 TB, but in practice, models up to 512 GB are more stable. 2 TB cards may not be recognized or work with errors due to the limitations of MIUI firmware.
⚠️ Note: Some Redmi models (e.g, POCO F5) have a hybrid slot - you can insert a second SIM-Check the specifications of your model in the official Xiaomi store!
Speed Class: UHS-I vs UHS-II, A1/A2 – What to Choose and What to Choose
The speed of the memory card is not a marketing trick, but a critical parameter. If you're shooting 4K@60fps video on the Redmi Note 13 Pro or playing Genshin Impact, a slow card will lead to jerks and recording errors.
- 🏎️ Class 10 (C10) — Minimum standard for full HD-It's good for photography and music.
- ⚡ UHS-I (U1/U3) — mandatory 4K-video. U3 The speed of the recording is not lower than 30 MB/s.
- 🔥 UHS-II — Redundant for smartphones (speeds up to 312 MB/s), but compatible with Redmi K60 Ultra.
- 📱 A1/A2 — optimized for applications. A2 (speed 4000 IOPS) You need to if you are transferring games to the map.
For most Redmi users, the best option is microSDXC UHS-I U3 A2. For example, SanDisk Extreme Pro or Samsung EVO Select. Cards labeled V30/V60/V90 (video classes) are also suitable for video shooting, but are not always optimized for installing applications.
| Model Redmi | Max. Map size. | Minimum class | Recommended grade |
|---|---|---|---|
| Redmi A2/A3 | 512GB | Class 10 | UHS-I U1 A1 |
| Redmi Note 12/13 | 1 TB | UHS-I U3 | UHS-I U3 A2 |
| POCO X5/X6 Pro | 1 TB | UHS-I U3 | UHS-I U3 A2 or V30 |
| Redmi K60/K70 | 1 TB | UHS-I U3 | UHS-II U3 A2 (optional) |
💡
If you’re shooting 8K or 4K@120fps video on the Redmi Note 13 Pro+, choose cards labeled V60/V90 – they guarantee stable recording without artifacts.
TOP-5 Memory cards for Xiaomi Redmi in 2026 year
There are hundreds of memory cards on the market, but not all of them are trustworthy, and we tested dozens of options and selected the top 5 for tasks ranging from budget expansion to professional shooting:
- SanDisk Extreme Pro (A2, U3, V30) — the best choice for games and 4K-Read/write speed before video. 200/140 MB/s. Suitable for POCO F5 redmi K70. ⚠️ Attention: AliExpress often sells fakes under this brand!
- Samsung EVO Select (U3, A2) – Optimum price/quality ratio, speeds up to 130/90 MB/s. Perfect for the Redmi Note 12 and Note 13.
- Lexar Play (U3, A2, V30) is a budget alternative to SanDisk. Good for video shooting and app installation.
- Kingston Canvas Go! Plus (U3, A2) is a reliable option for everyday tasks, speeds up to 170/90 MB/s.
- Silicon Power Superior Pro (U3, A1) is the cheapest option for memory expansion (without installing games).
Tip: Before buying, check the card for authenticity with official brand utilities (such as SanDisk Memory Zone or Samsung Magician).Fakes often have understated real capacity and speed.
View reviews on independent sites (not only on Wildberries/Ozon)|
Check the package for hologram and serial number |
Download brand utility for speed testing |
Buy from an authorized dealer (SanDisk, Samsung, Kingston have lists of authorized sellers)-->
How to insert a memory card in Xiaomi Redmi: step-by-step instructions
The process of installing the memory card in Redmi depends on the model. In most cases, you will need a paper clip or a special key to remove the tray. SIM-Follow the instructions:
- Turn off your smartphone (required!).
- Find a slot for SIM-cards (usually on the upper or lateral edge).
- Insert the paperclip into the hole and carefully remove the tray.
- Place the memory card in the appropriate slot (usually a signed microSD).
- Put the tray back in before the click.
- Turn on the phone and wait for the card to be identified.
If the map is not determined:
- 🔄 Reboot your smartphone.
- 🧹 Clean the contacts of the card with a soft cloth (do not use alcohol!).
- 📱 Check if your model supports the map of this volume (see table above).
- 🔧 Update the firmware MIUI last-minute.
For models with a hybrid slot (for example, POCO X5 Pro):
Settings → SIM- Cards and Mobile Networks → Settings SIM- Card Slot → Select MemoryWhat to do if your smartphone does not see the memory card?
Formatting a map: FAT32, exFAT or NTFS?
Once the card is installed, MIUI will suggest formatting it, and the choice of file system depends on the size of the card and the tasks:
- 💾 FAT32 — Compatible with all devices but does not support files >4GB. Suitable for cards up to 32GB.
- 🚀 exFAT – Optimal for 64 GB-2 TB cards. Supports large files (e.g. video) 4K).
- 🖥️ NTFS — Not recommended for smartphones (may cause errors).
How to format a map in Xiaomi Redmi:
- Go to Settings → Memory → Memory Map.
- Click Format (all data will be deleted!).
- Choose exFAT for 64GB cards and more.
⚠️ Note: If you transfer applications to the map (Settings) → Annexes → Move it to SD), format it as internal memory, but remember, once you extract the map, the applications will stop working!
Transfer applications to a memory card: pros and cons
The Adoptable Storage feature is available in MIUI, but has serious limitations. Before you use it, weigh the pros and cons:
| Pluses | Cons |
|---|---|
| ✅ Frees up internal memory | ❌ Apps are slower (even on maps) A2) |
| ✅ More games and programs can be stored | ❌ The card becomes "tied" to the device (you can not just remove it) |
| ✅ Cheaper than buying a smartphone with more internal memory | ❌ If the card fails, you can lose all the transferred applications |
How to transfer applications to the map:
Settings → Applications → Select the application → Storage → Change → Memory MapImportant: Not all apps support portability, such as WhatsApp, Telegram and most games refuse to work from a memory card, and it is not recommended to port system applications, this can cause MIUI failures.
💡
If you’re critically short on memory, it’s better to buy a smartphone with a large built-in drive than try to migrate apps to a microSD. The memory card is suitable for photos, videos and music, but not for games and instant messengers.
Frequent Memory Card Errors in Redmi and How to Avoid Them
Even experienced users have problems with memory cards, and here are the most common mistakes and ways to solve them:
- 🔋 The suddenly card has become “read-only” – check the switch on the adapter (if any) or format the card.
- 📉 Smartphone brakes after installing the card - most likely, the card is too slow (you need a class) A2).
- 🚫 The card is not determined after the update MIUI — Reset the settings through Settings → Memory. → Memory map → Settings (⚙️) → Reset.
- 🔥 The card is overheating, a sign of a forgery or malfunction!
If the card fails, try to restore data using programs:
- Recuva (for Windows)
- DiskDigger (for Android)
- PhotoRec (cross-platform)
But remember: the chances of recovery are higher the earlier you stopped using the card after a crash.