How to install a memory card in Xiaomi Redmi 7: a guide with photos and tips

Xiaomi Redmi 7 is one of the most popular budget smartphones with support for memory expansion via microSD. However, many users face problems when first installing: the phone does not see the card, asks to format it or does not allow you to transfer applications. In this article, we will analyze all the nuances from choosing a memory card to configuring it as an internal drive or removable storage.

The Redmi 7 features a hybrid slot (or two). SIM-card SIM + This means that you have to sacrifice a second SIM to install the memory card, but don't worry, we'll show you how to make the most of the available space, including transferring applications and cache to the computer. SD-map.

Important: the instruction is relevant for all Redmi 7 modifications (including the Global and China versions), as well as for firmware based on the Redmi 7. MIUI 10–14 If you have custom firmware (like LineageOS), some items may differ.

1. Which memory card to choose for Xiaomi Redmi 7

Not all microSDs work equally well with Redmi. 7. The manufacturer officially supports the maps up to the 256 GB, but in practice it is better to focus on class models A1/A2 or UHS-I (U1/U3) — They are optimized for smartphones and provide high read/write speeds.

Here are the key selection criteria:

• 🔹 Size: 32GB (minimum for comfortable use) to 256GB (maximum that a phone supports), 512GB and 1TB cards may not be recognized.
• 🔹 Speed class: optimally class 10 or UHS-I U1/U3. Class Cards 4/6 will be slowed down when recording videos or transferring applications.
• 🔹 Manufacturer: reliable brands - SanDisk, Samsung EVO, Kingston Canvas, Transcend. - Avoid no-name cards (risk of counterfeiting and low speed).
• 🔹 Format: MicroSDXC only (for cards) >32 GB) or microSDHC (up to 32 GB). microSD (up to 2 GB) will not work.

⚠️ Note: If you plan to use the card as internal memory (for installing applications), be sure to take a model marked with a marking. A1/A2 — They are optimized for random I/O operations (e.g. SanDisk Ultra). A1 Samsung EVO Plus A2).

Preparation of a memory card before installation

Before you put a microSD in Redmi 7, you have to prepare it properly, which will eliminate recognition problems and speed up the work.

Step 1: Checking the card for errors

If the card has already been used on another device, we recommend checking it for file system errors.

• 💻 On PC via chkdsk (Windows) or Disk Utility (macOS).
• 📱 On an Android smartphone with the help of applications like SD Card Tester or A1 SD Bench.

Step 2: Formatting (if required)

If the card is new or you want to erase all data, format it in format. FAT32 (for cards up to 32 GB or exFAT (for cards) >32GB). Don't use it. NTFS — Android doesn't support it!

Check the card for errors through chkdsk or specialized software|

Format in FAT32/exFAT (not NTFS!)|

Make sure there is no important data on the map (it will be erased when you set up the phone)|

Use an adapter to check on your PC (if you have one).

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⚠️ Note: If you format a map on Redmi 7 as internal memory, your phone will automatically encrypt it, and then you can’t read it on other devices without resetting the settings!

3. Step-by-step instructions: how to insert a memory card in Redmi 7

Now we move on to the physical setup. Redmi 7 has a memory card slot that's combined with a tray for the memory card. SIM-Here's how to insert microSD correctly:

Step 1. Turn off the phone.

While Redmi 7 supports hot card swaps (without turning off), we recommend turning the device off completely to avoid crashes on the first recognition.

Step 2. Remove the tray for SIM-map

Take a paper clip (or a special key from the kit) and gently press the tray hole located on the top of the smartphone (near the power button). The tray will slide out - get it out.

Step 3. Install a memory card

There are two slots in the tray:

• 📱 Slot 1 - for nano-SIM (main sim).
• 📱 Slot 2 is hybrid: either a second nano-SIM or a microSD.

Put the microSD in the slot 2 pins down (as shown in the diagram inside the tray). SIM-I'll have to take it out.

Step 4. Put the tray back in.

Carefully insert the tray before the click. Make sure it sits straight -- if the tray is inserted curved, the phone won't recognize the card.

Step 5: Turn on the phone and wait for recognition

Once turned on, Redmi 7 should automatically identify the map and prompt it to be configured. If that doesn't happen, move on to the next section.

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If the tray is not inserted to the end, check if the card is correct. A common error is an inverted microSD (contacts up instead of down).

4. Memory card setup in the system: internal or external

After installation, Redmi 7 will offer you to choose how to use the card:

1. As a portable storage (external memory) - for photos, videos, music.
2. As internal memory – for installing applications (recommended if there is little internal memory).

Let's look at both.

Option 1: Portable storage (external card)

If you choose this mode, the card will work like a regular flash drive:

• 📁 Files can be transferred manually.
• 📱 Applications are installed by default in internal memory.
• 🔄 The card can be retrieved and used in other devices.

It is suitable for storing media files, but does not solve the problem of lack of memory for applications.

Option 2: Adoptable Storage (Inner Memory)

This mode allows you to expand the internal memory of the phone due to microSD.

• 📱 Applications are automatically installed on the card (if selected in the settings).
• 🔒 The card is encrypted and linked to the phone (cannot be used in other devices without formatting).
• ⚡ The speed of operation depends on the class of the card (A1/A2 preferably).

⚠️ Note: Once the card is set up as internal memory, it cannot be retrieved without completely resetting the phone (otherwise the data will be lost), and some applications (such as WhatsApp or banking) may refuse to work with external memory.

How do you choose a regime?

1. When you first connect the card, a selection window will appear. → Internal memory.
2. The phone will tell you that all the data on the map will be erased.
3. Wait for the formatting to be completed (it can take 5-10 minutes).
4. After the reboot, the card will appear as part of the internal memory in the Settings section. → Memory.

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If you have selected the internal memory mode, but the applications are still installed in the internal memory, go to Settings. → Annexes → Application settings → Default installation location and select Memory Map.

5. How to transfer data and applications to a memory card

If you set up a card as internal memory, some of the applications will automatically be installed on it, but what about the programs and files that are already installed?

Portability of applications

Not all applications can be transferred to SD-Here's how to check the map:

1. Open the Settings → Applications.
2. Select the app you want (like Facebook or Google Maps).
3. Click Warehouse → Change → Memory Map.
4. Confirm the transfer (may take a few minutes).

⚠️ Note: System applications and some games (e.g, PUBG Mobile or Genshin Impact does not support card transfer.

Transfer of files (photos, videos, music)

For media files, it is easiest to use Explorer MIUI:

1. Open Explorer (the folder icon on the desktop).
2. Go to the Internal Memory section → select folders (DCIM For photo, Download for downloads).
3. Press and hold the files. → Cut or copy.
4. Go to the Memory Map section → insert.

To automatically save new photos/video to the map:

1. Open the camera. → press on ⚙️ Settings.
2. Select a Retention Site → Memory map.

6. Problem Solving: Phone Can't See Memory Card

If Redmi 7 does not recognize microSD, check the following points:

If nothing helps, try:

• 🔧 Test the card on another phone or PC (possibly damaged).
• 📱 Update Redmi 7 to the latest version (in new versions) MIUI corrected the bugs from SD-map).
• 🔄 Reset your phone settings (before doing so, back up your phone!).

7. Optimization of the memory card: tips and life hacks

To keep the memory card in Redmi 7 fast and long, follow these guidelines:

1. Clean the app cache regularly

If the card is used as internal memory, it gets clogged with temporary files over time to clear the cache:

1. Go to Settings → Memory → Cleanup.
2. Choose Deep Cleanup and confirm the action.

2.Do not fill out the card 100%

Leave 10-15% free space – this will prevent slowing down the recording and errors when installing applications.

3. Use a card reader for large files

If you want to copy a large file to the map (for example, a movie in the 4K), It is better to do it through a card reader on a PC - it will be faster than on a PC. OTG via telephone.

4. disable automatic backup to the card

Some applications (e.g, MIUI Backup) save backups by default to SD-This fills up space quickly, to shut down:

1. Go to Settings. → System and device → Backup.
2. Turn off Automatic Backup or change the save path to the cloud.

5. Check the card for errors every 2-3 months

Use applications like this. SD Card Tester or built-in chkdsk utility on PC to identify bad-sector in time.

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If the card is slow to work, try formatting it directly in your phone: → Memory. → Memory map → Format → Internal memory. This will reset the file system and can speed up writing.

8.Memory card alternatives for Redmi 7

If for some reason you can’t or don’t want to use a microSD, consider other ways to expand your memory:

1. Cloud storage

Services like Google Drive, Mi Cloud or Yandex Disk allow you to automatically sync photos, videos and documents, minus the Internet and a large fee (over 15-50 GB).

2. OTG-accumulator

You can connect the external SSD flash-drive OTG-Adapter (Redmi 7 supported) will be faster than the microSD, but the carrier will always have to carry with you.

3. Optimization of internal memory

Remove unnecessary apps, clear the cache, and move media files to the cloud, and you can also disable pre-installed apps. MIUI, not used:

1. Go to Settings → Apps.
2. Select an unneeded app (such as Mi Music or Mi Video).
3. Click Disable (this will remove the updates and free up space).

4. Replacement with a model with a larger internal memory

If 16/32 GB is catastrophically small, consider buying a Redmi Note 7 or other models with 64/128 GB of memory. But it's a radical and costly option.

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If you often shoot videos in full HD or play heavy games, a Class memory card 10/A2 It is mandatory - otherwise there will be lags and errors in the recording.

FAQ: Frequent questions about memory cards in Redmi 7