Xiaomi Redmi Note 8 Pro: how much memory card supports a smartphone?

The Xiaomi Redmi Note 8 Pro, launched in 2019, is still a popular choice among users who value the balance of performance and price. One of the key questions when buying or operating this device is the possibility of expanding memory. Owners often wonder: what is the maximum memory card size supports the Redmi Note 8 Pro, and what nuances should be considered when choosing a microSD?

In this article, we will analyze the official specifications, test real compatibility with cards of different sizes (including 512 GB and 1 TB), and give recommendations on the choice of the best option, especially focusing on the exFAT format, speed classes (UHS-I, A1/A2) and the typical problems that users face when using external drives.

Xiaomi’s official data: What does the manufacturer say?

According to Xiaomi’s technical documentation, the Redmi Note 8 Pro supports microSD memory cards (including microSDHC and microSDXC) with a maximum capacity of up to 512 GB. This information is confirmed on the official brand website and in the user manual.

• 📌 Support for microSDXC (up to 2 TB in theory) is limited to firmware. In reality, the smartphone only works stably with cards up to 512 GB.
• 🔄 The memory card slot is hybrid: you can use either the second one. SIM-MicroSD card (but not simultaneously!).
• ⚡ File system format: cards larger than 32 GB require exFAT (instead of the outdated one) FAT32).

It is important to note that some users report successful use of 1TB cards (e.g. SanDisk Extreme). 1TB), But these are the exceptions, rather than the rule, and the stability of the work depends on the firmware version. MIUI specific map model.

Real tests: compatibility with 256 GB, 512 GB and 1 TB cards

To verify the claimed specs, we tested the Redmi Note 8 Pro (the Android 12 version of MIUI 14 firmware) with memory cards from different manufacturers and sizes.

The tests show that cards up to 512GB work smoothly, whereas 1TB can cause instability, due to the limitations of the memory controller in the Redmi Note 8 Pro, which is optimized for lower volumes. If you are critically interested in maximum memory, you should choose 512GB from a trusted brand (SanDisk, Samsung, Lexar).

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For stable operation, choose memory cards up to 512 GB with support for the UHS-I standard and a speed class not lower than A1.

File system formats: FAT32 vs exFAT

One of the keys to using a memory card with a capacity of more than 32 GB is the choice of file system. Redmi Note 8 Pro automatically offers to format the card in exFAT, if its volume exceeds 32 GB. Why is it important?

• 🔹 FAT32: Compatible with all devices, but has a file size limit (maximum 4GB) not suitable for high-resolution video recording.
• 🔹 exFAT: supports files up to 16 EB (exabytes), optimized for flash drives. Recommended choice for 64 GB or more cards.

If you insert a 128GB card formatted in FAT32, the smartphone will suggest reformatting it to exFAT.

⚠️ Attention: When in use FAT32 map >32GB you will not be able to record video in resolution 4K or save files larger than 4GB (such as movies or archives).

To check the card's current file system, connect it to your computer (via a card reader) and see the properties in the explorer. If you need a reformatting, use the official SD Card Formatter utility from the SD Association.

What to choose for Redmi Note 8 Pro?

The speed of the memory card directly affects the performance of the smartphone, especially when:

• 🎥 Video recordings in 4K full HD 60 FPS.
• 📸 Serial shooting in Burst mode (many shots in a row).
• 🎮 Starting games from a card (if used as internal memory).

For Redmi Note 8 Pro, optimal cards with the following characteristics:

For everyday use, a UHS-I U1 card (such as SanDisk Ultra) is enough. If you shoot a lot of 4K video or play heavy games from a card, you’d better take a model with UHS-I U3 and A2 support (such as Samsung PRO Endurance or Lexar Play).

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Before buying, check the card for authenticity using the H2testw utility – this will help you avoid counterfeiting with low speed or volume.

How to use a memory card as an internal memory?

The Redmi Note 8 Pro supports Adoptable Storage, which allows you to install apps directly to the microSD.

Format the card in exFAT (if you have a >32 GB)|Backup your data – formatting will delete everything|Connect the card to your smartphone and select “Use as internal memory"|Wait until the process is completed (may take a while). 5-10 minute)|Reboot the device after setting up-->

After activation of this mode:

• 📱 The card will be encrypted and linked to the device, and it will be impossible to use it on another smartphone without formatting.
• ⚡ Application speeds can slow down (even on class maps) A2).
• 🔄 When you remove the map, some applications may stop working.

⚠️ Note: If you delete the card used as internal memory without first "unmounting" in the settings (Settings) → Memory. → Map. SD → Disable), this can lead to malfunctions in the application.

We recommend using this mode only in case of acute lack of internal memory, and for most users it is better to leave the card as a portable storage (for photos, videos and music).

Typical problems and their solutions

When using memory cards in the Redmi Note 8 Pro, users face several typical problems.

• 🚫 The card doesn't recognize: Check if the card is inserted correctly (contacts upwards); clean the card and slot contacts with a soft brush or alcohol; try formatting the card on a PC in exFAT.
• 🐢 Slow work: Use class cards U3 or A2. Don't fill the card more than 80% - it slows down. check the card for errors using chkdsk (on PC).
• 🔄 The smartphone constantly asks you to format the card: This may indicate that the file system is damaged. Back up the data and format the card. If the problem recurs, the card may be fake or damaged.

If none of these methods worked, try updating your MIUI firmware to the latest version or reset your smartphone settings (Settings → About Phone → Resetting). In rare cases, the problem may be due to a hardware malfunction of the card slot.

Recommendations for choosing a memory card for the Redmi Note 8 Pro

Based on the tests and user feedback, we have compiled a list of recommended memory cards for the Redmi Note 8 Pro:

When buying, pay attention to:

• 🛡️ Originality: Buy cards only from official sellers (the risk of counterfeiting is very high in the market!).
• 📦 Packaging: Original SanDisk or Samsung cards must have a branded hologram blister pack.
• 🔍 Warranty: Check for a warranty card (at official dealers — 5-10 years).

Avoid “nonaime” brands and cards with suspiciously low prices – they often have an understated speed or real volume less than stated.

Frequently Asked Questions (FAQ)