How to connect correctly SD-Map to the smartphone Xiaomi Redmi 9 Pro: instruction 2026

Why Redmi 9 Pro owners need to buy the product SD-How to connect the card without errors

Xiaomi Redmi 9 Pro, even in its maximum configuration, offers only 128 GB of internal memory — this is not enough for everyone. RAW photos, 4K videos, heavy games like Genshin Impact or Call of Duty Mobile eat gigabytes in a matter of days. The solution is to install a microSD card, but here users are waiting for pitfalls: from format incompatibility to formatting errors.

In this article, we will discuss all ways of connecting. SD-Redmi 9 Pro cards (including Redmi 9 Pro Max models and regional versions), explain how to choose a memory card to work at full speed, and show how to avoid typical errors. Special attention will be paid to configuring the card as an internal drive – a feature that Xiaomi hides in the depths of the menu MIUI.

Important: the instructions are relevant for MIUI 12-14 firmware (including global and Chinese versions). If your smartphone is running on an older version, update the software first through Settings → About Phone → System Update.

What? SD-Choose a map for Xiaomi Redmi 9 Pro: technical requirements

Not every microSD is suitable for Redmi 9 Pro. The smartphone supports microSDXC cards (up to 512 GB), but there are nuances:

• 🔹 Speed class: minimum UHS-I (U1), but for video recording 4K and fast application work is better U3 or A2 (Optimized for smartphones).
• 🔹 Capacity: 32 GB to 512 GB. 1 TB cards (e.g. SanDisk Ultra) 1TB) It will be physically appropriate, but MIUI Maybe they don't recognize them.
• 🔹 File system: for cards up to 32 GB — FAT32, Redmi 9 Pro will automatically offer to format the card when you first connect.
• 🔹 Brands: Preference SanDisk, Samsung EVO, Kingston Canvas – They Are Tested for Compatibility with Xiaomi.

⚠️ Attention: Cheap cards without a brand (such as "no-name" with AliExpress) often have understated real capacity and low write speed. H2testw pre-purchase.

Where is the slot for SD-Redmi 9 Pro cards: location and types of trays

Xiaomi Redmi 9 Pro is equipped with a hybrid slot (2 nano-SIM) + microSD or 1 nano-SIM + This means that you have to donate one memory card to install it. SIM-The slot is located on the left end of the case (when you look at the screen).

To get the tray out:

1. Turn off your phone (required!)
2. Insert a paper clip or special key into the hole next to the slot.
3. Carefully pull the tray over yourself.

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If the tray is jammed, don't use force! grease the edges with silicone lubricant (such as WD-40 Specialist) and try again after 5 minutes.

⚠️ Note: Some users confuse the slot for SD-plug-card IR-Inserting a map there, you risk damaging the infrared port!

Step-by-step instruction: how to insert SD-Map of Xiaomi Redmi 9 Pro

The process of installing the memory card takes less than a minute, but requires accuracy.

Turn off the phone (hold the power button for 5 seconds)

Get the tray for you. SIM-map

Check the card for damage.

Install the microSD in the appropriate slot (contacts down)

Put the tray back before the click-->

After switching on the phone, a notification will appear: “New SD-map discovered by žena. Click on it or go to Settings → Memory.

The system will offer two options for using the card:

• 📁 Portable storage – files are saved to the card manually, applications are installed only in internal memory.
• 📱 Internal memory – the card becomes part of the system (you can transfer applications, cache, updates).

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The choice of internal memory mode is irreversible! Once formatted, the card will not be read on other devices without completely erasing the data.

Setting up SD-Maps as internal memory: hidden possibilities MIUI

If you've chosen the internal memory mode, the system will suggest formatting the card, which takes 1-3 minutes depending on the capacity.

• 🔄 After formatting, all data on the map will be irretrievably deleted.
• 🔒 The card will be encrypted and linked to the phone – it will not be used in other devices without re-formatting.
• ⚡ The speed of applications from the card will be lower than with internal memory (especially noticeable in games).

To move applications to SD-map:

1. Open Settings → Applications → Application Management.
2. Select the app you want (such as WhatsApp or Spotify).
3. Press Warehouse. → Change. → SD-map.

⚠️ Note: Not all applications support portability SD-For example, Google Play Services, MIUI System and most banking applications (Sberbank, Tinkoff) will remain in internal memory.

Typical errors when connecting SD-maps and how to fix them

Even after installing the card correctly, Redmi 9 Pro users are facing problems.

If the system writes "SD-The card is protected from recording, check:

• 🔓 Physical lock switch on the adapter (if you use it).
• 🛡️ Antivirus programs (e.g. Avast or 360 Security) can block access).
• 📛 Access rights: go to Settings → Annexes → Permits → Memory and enable access for the right programs.

To port applications that MIUI blocks, use ADB:

adb shell pm set-install-location 2

This command will force the system to install applications on default SD-Careful: Not all applications will work correctly!

How to optimize work SD-Maps: Advice for Advanced Users

To make the memory card last longer and work faster, follow these recommendations:

• 🔄 Regularly format the map (once every 3-6 months) through Settings → Memory. → SD-map → Format. It cleans up fragmented data.
• 📉 Don’t fill up more than 80% of the card – it reduces the speed of writing.
• 🛡️ Turn off caching for unnecessary applications: Settings → Annexes → [Select the application] → Memory. → Clear the cache.
• 🔋 Avoid abruptly extracting the card while recording files (such as while shooting videos) which can damage the file system.

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To speed up reading/write, turn off the function "Memory Optimization" in Settings → Special facilities → Optimization MIUI. She sometimes conflicts with her job. SD-map.

If you use the card as an internal memory, transfer only:

• 🎮 Big cash games (PUBG Mobile, Free Fire).
• 📷 Photo and video (set up default save in the Camera app).
• 🎵 Music and podcasts (in Google Play Music or Spotify, specify the path to the music) SD-map).

Don't put it on. SD-map:

• ❌ System applications (Google Play Market, MIUI Launcher).
• ❌ Widgets and live wallpaper – they can slow down.
• ❌ Applications with push notifications (for example, Telegram or VK), if you don't want to delay.

FAQ: Frequent questions about SD-Maps in Xiaomi Redmi 9 Pro