Xiaomi Redmi 9A
microSD
current-price
Redmi 9A
The smartphone supports microSD cards up to 512 GB (officially confirmed by Xiaomi), but not all models work equally well with maximum volume. 9A has a hybrid slot, which means that the memory card takes the place of the second SIM-If you're interested in two SIMs, you'll have to choose between them and the extra storage.
Prices for memory cards vary greatly: from 300 rubles for an unnamed 16 GB to 5 000 + rubles for a SanDisk Extreme Pro 512 GB. But cheap options are often fakes or have low recording speeds, which slow down the camera and applications. We analyzed offers on Yandex Market, Wildberries, Ozone and in offline stores to show real prices and help with the choice.
Current prices for memory cards for Xiaomi Redmi 9A in 2026
The cost of memory cards depends on three key parameters: volume, speed class and brand. Below are the average prices for June 2026 (in rubles) for popular options. Note that during sales (for example, Black Friday or 11.11.00), prices can fall by 15-30%.
| Volume. | Class speed | Brand | Average price (₽) | Where is it cheaper? |
|---|---|---|---|---|
| 32GB | Class 10 / UHS-I | SanDisk Ultra | 450–600 | Wildberries |
| 64GB | A1 / UHS-I | Samsung EVO Select | 700–900 | Yandex Market |
| 128GB | A2 / UHS-I | Kingston Canvas Go! | 1 200–1 500 | ozone |
| 256GB | A2 / UHS-I | SanDisk Extreme | 2 500–3 200 | SberMegaMarket |
| 512GB | A2 / UHS-I | Samsung Pro Plus | 4 500–5 500 | Offline stores (DNS, M. Video) |
Prices for cards 16 GB, we deliberately did not include in the table – they are not advisable for Redmi 9A. Even if you only store photos, 16 GB will be enough for a maximum of 1,500-2000 images in high resolution, and taking into account the cache of applications and system updates, the place will end in a couple of months.
Interesting fact: SanDisk and Samsung cards are often forged, especially at 128GB or higher, and counterfeits can be 2-4 times smaller than the actual volume claimed, so to avoid cheating, buy only from official sellers (list below) or check the card after purchase using H2testw.
How much memory card should I use for the Redmi 9A?
The size of your smartphone depends on how you use it, and here are some guidelines:
- 📷 32GB is enough if you take a little photo/video and do not install heavy games.
- 🎮 64GB is the best option for most users. Allows storage ~5,000 photos, several movies in HD and 3-5 games, for example, PUBG Mobile or Genshin Impact).
- 🎥 128GB – if you shoot a lot of video in Full HD, store offline maps (Yandex.Navigator, Google Maps) or install dozens of games.
- 💾 256GB and higher – redundant for Redmi 9A, The smartphone does not support video recording in 4K, And its processor doesn't pull up modern games at maximum settings, and that's only relevant for professionals (like photographers who use their smartphone as a backup drive).
Important: Redmi 9A does not support exFAT cards out of the box. If you buy a 128GB+ card, you will have to format it in FAT32 via a computer or a special application (such as SD Card Formatter), otherwise the smartphone will not see the full volume.
Tip: if you choose between 64 GB and 128 GB, take 128 GB - the difference in price usually does not exceed 500-700 rubles, and the memory reserve will not be superfluous. A2 (They are faster and the speed difference between 64 GB and 128 GB of one brand is minimal.
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For most Redmi 9A users, the best choice is a 128GB A2 memory card, which provides a balance between price, volume and speed.
Speed class: What do A1, A2, UHS-I mean and why it matters?
Memory cards have mysterious designations like Class 10, A1, UHS-I, or V30, which are speed classes that determine how fast a card will record and read data. It's critical for Redmi 9A to choose the right class, otherwise the card will slow down when you record video or launch applications from it.
Let's get into the designations.
- 📊 Class 10 – minimum recording speed of 10 MB / s. Suitable for storing photos and music, but can slow down when recording video in Full HD.
- ⚡ UHS-I (U1 or U3) — speed (U1) 30 MB/s (U3). U3 It is a must if you are shooting a video in Full. HD 60 FPS.
- 🤖 A1 / A2 — It's optimized for applications. Maps. A2 have a random recording speed of 4,000 IOPS, It speeds up the launch of games and programs from the memory card. 9A This is true if you are moving your application to SD-map (more on this below).
For the Redmi 9A, the minimum recommended class is UHS-I U1 (Class 10).
- shoot video in Full HD,
- to put games on the map,
- use the map as the main storage for applications,
Then take A2 or U3.
Example: SanDisk Ultra A1 128 GB card costs ~1,300 rubles and provides a recording speed of ~90 MB / s, which is enough for all tasks on Redmi 9A. But an unnamed Class 10 card for 500 rubles can have a real recording speed of 2-5 MB / s, because of which the video will be recorded in jerks.
What happens if you use a slow memory card?
Top.-5 Memory card brands: which one to choose for Redmi 9A
There are hundreds of brands on the market, but only 5 manufacturers guarantee stable operation with the Xiaomi Redmi 9A:
- SanDisk is a leader in reliability, but is often forged, with the Ultra series (for everyday tasks) and Extreme series (for video and gaming) being the best choice.
- Samsung - EVO Select and Pro Plus series cards are fast and durable, with fewer counterfeits than SanDisk's.
- Kingston is a budget option with good price/quality ratio. the Canvas Go! (A2) series is suitable for gaming.
- Transcend is a reliable brand, but less common in Russia, and the High Endurance series is optimized for DVRs, but it is also suitable for smartphones.
- Silicon Power is a low-cost, guaranteed card.The Superior Pro (A2) series competes with SanDisk for price.
We do not recommend buying memory cards from the following brands (or without a brand at all):
- NoName (without logo),
- Apacer (frequent forgeries),
Patriot (low quality control)
Anything (Chinese fakes for well-known brands)
Where to buy so as not to run into a fake:
Official stores: SanDisk on Ozone, Samsung on Wildberries.
- Network retailers: DNS, M. Video, Citilink (check reviews about the seller).
Foreign sites: Amazon (with delivery to Russia), AliExpress (only sellers with a rating of 98%+ and reviews in Russian).
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Before buying, check the card for authenticity by serial number on the official website of the brand. For example, for SanDisk, this can be done here: https://www.sandisk.ru/verify.
How to transfer applications to a memory card in Redmi 9A
Xiaomi Redmi 9A supports porting applications to a memory card, but with limitations:
1.Not all apps can be moved (for example, WhatsApp or Telegram remain in internal memory).
2. the speed of applications from the card depends on its class (optimally - A2).
3 System applications cannot be moved.
Instructions for transfer:
1. Insert the memory card into the slot (format it into FAT32 if necessary).
2. Go to Settings → Applications → Select the application → Storage → Change → Memory Map.
3. wait until the transfer is completed (may take a few minutes).
Important: once the app is moved, it won’t be updated through Google Play, and to update it, you’ll have to temporarily move it back to internal memory.
Format the card in FAT32 (if volume > 64 GB) | Check the speed class (optimally A2/U3) | Make sure the card is original (serial number check) | Backup the data before formatting-->
⚠️ Warning: If they start to fly or slow down after transferring the application to the memory card, return them to internal memory, which means that the card speed is not sufficient for stable operation.
Common Mistakes in Selection and Use of Memory Cards
Even experienced users sometimes make mistakes that lead to data loss or unstable smartphone performance.
- 🚫 Buying a fake card is especially important for 128 GB volumes+. Counterfeiting can have a real volume of 2-4 times less than the declared.
- 🔄 Frequently extracting the card without safely disabling it causes damage to the file system. Always use the option Safe extraction in the storage settings.
- 📱 Using a map as the primary storage for applications - even maps A2 slower than the internal memory. SD Only those applications that are not critical to speed.
- 🔋 Storing a card near heat sources — like a smartphone case that warms up while charging. Overheating shortens the card's lifespan.
Another common problem is the error "Memory card corrupted" after the MIUI update, which is due to file system incompatibility.
1. Remove the card and connect it to the computer.
2. Save all data.
3. Format the card in FAT32 with the SD Card Formatter.
4. Put it back in the smartphone.
⚠️ Note: If you use a memory card in Redmi 9A As the primary storage for photos and videos, regularly (every 2-3 months) copy data to a computer or cloud. Memory cards have a limited resource of records (especially cheap models) and can fail without warning.