Memory card in Xiaomi Redmi 7A: installation, configuration and secrets of use

Xiaomi Redmi 7A is a budget smartphone with modest 16 or 32 GB of internal memory, so a memory card for it is often necessary. However, many users face problems: the phone does not see the microSD, does not allow you to move applications or suddenly “eats” files. In this article, we will analyze all the nuances of working with a memory card on the Redmi 7A – from choosing a drive to solving typical errors.

Feature of the model – support for microSD up to 256 GB (officially) and a hybrid slot, which is shared with the SIM-This means that using two SIMs and a memory card at the same time requires a MicroSD adapter. + Nano SIM (We will explain in detail how to avoid common configuration errors, which formats are supported (FAT32, exFAT or NTFS?), Why Smartphones Sometimes Forget Files After Rebooting.

Important: The instructions in this article are relevant for the Redmi 7A based on MIUI 10–14 (including global and Chinese firmware).If your phone runs on custom firmware (for example, LineageOS), some menu items may differ.

Which memory card to choose for Redmi 7A: technical requirements

Not every microSD is suitable for Redmi 7A. The manufacturer claims support for cards up to 256 GB, but in practice with drives of 128 GB and above can be problems - especially if they are formatted in NTFS.

• 📌 Volume: 32-128 GB (64 GB – “golden mean” in price and compatibility).
• 🔄 Speed class: Class 10 or UHS-I (U1/U3) video-recording HD.
• 🏷️ Brand: SanDisk, Samsung EVO, Kingston (cheap no-name cards are often forged).
• 🔍 Format: FAT32 (up to 32 GB or exFAT (64 GB). NTFS not recommended!

⚠️ Note: 256GB cards may not work as smoothly due to the limitations of the Qualcomm Snapdragon 439 processor. If you need this size, check compatibility before buying or format the card in exFAT via PC.

Should you overpay for A1/A2 (application-optimized) cards? This is not critical for Redmi 7A, as the portability of applications to microSD in this model is limited (for more details in section 4). However, if you plan to store heavy games on the map (for example, Genshin Impact or Call of Duty Mobile), you should choose A1.

2. Installation of a memory card: step-by-step instructions

At Redmi. 7A a hybrid slot is used, so before installing a memory card you will have to choose: either two SIM-card SIM + microSD. If you need both SIMs, buy a 2 adapter. SIM + microSD” (e.g. Baseus or UGREEN).

Turn off the phone (required!)|Remove the tray for SIM-paper-card|Check that the card contacts are clean|Insert microSD with gold contacts down|Make sure the card is “clicked” in the slot-->

To insert a map:

1. Turn off Redmi 7A (don’t restart, turn it off!).
2. Insert the paperclip into the tray hole for SIM-card (on the left end of the phone).
3. Remove the tray and put the microSD in the SD slot (usually signed).
4. Put the tray back in place before you click.
5. Turn on the phone.

After the activation, a notification will appear: SD-You can click on it to open the settings menu. If the notification doesn't appear, go to Settings. → Storage and tap on point. SD-map.

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If the phone can't see the card, try rebooting it with the power button clamped for 10 seconds, sometimes helping to "initiate" the drive.

3. Memory card formatting: FAT32, exFAT or NTFS?

Redmi 7A supports three file systems for microSD, but not all are equally useful.

• 📁 FAT32: Compatible with all devices but does not support files >4GB. Suitable for cards up to 32GB.
• 📁 ExFAT: Optimal for 64–128GB cards, supports large files, but may not read on older PCs.
• 📁 NTFS: Not recommended! recording errors may occur, especially when connecting to a PC.

How to format the card directly on the phone:

1. Go to Settings. → Warehouse → SD-map.
2. Slip on the three dots in the top right corner and select Storage Settings.
3. Click Format → Format as internal storage (if you want to expand your phone’s memory) or Format as portable (if the card is used as a removable drive).
4. Confirm the action.

⚠️ Warning: Formatting as internal storage will tie the card to your phone! After that, it will not be read on other devices without completely erasing the data. Use this mode only if you critically lack memory for applications.

4. Transfer data and applications to a memory card

In Redmi 7A, the microSD application portability is limited, which is a feature of MIUI firmware. You can only move:

• 📷 Photo and video (via Gallery) → Select → Move it).
• 🎵 Music and documents (manually through file manager).
• 🎮 Some games and applications (if the developer has provided this option).

To migrate supported applications:

1. Open Settings → Applications → Application Management.
2. Select the app you want (such as WhatsApp or Spotify).
3. Slip the vault. → Change. → SD-map.
4. Confirm the transfer (reboot may be required).

Important: System applications (such as Mi Browser or Security) and most games from Google Play cannot be transferred to a memory card. This is a limitation of the Android architecture, not a specific model.

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Porting apps to a memory card in Redmi 7A only works for programs that support this feature. Most modern games (such as PUBG Mobile or Free Fire) can not be moved - they will slow down or makeover.

5. Typical errors and their solutions

Redmi 7A users often face problems with memory cards, and we will discuss the most common ones:

If the card is identified but the files are not copied, check:

• 🔌 Is the card connected as a portable storage (in this case, the recording is possible only through the file manager).
• 🛡️ Are there any restrictions on writing in the application settings (for example, in the Gallery or Downloads).
• 📶 Is the card storage occupied (check in Settings) → Warehouse).

⚠️ Warning: If after formatting the card as internal memory, the phone began to slow down, return the settings to factory (Settings) → The phone. → Class 4 or lower cards are not intended for use in this mode!

6.How to speed up memory card performance in Redmi 7A

If the card is slow (files are copied for a long time, applications are slowed down), try these methods:

1. Turn off the caching to the card: Go to Settings → Additional → Memory → App cache and select Internal Memory.
2. Use the Mi File Manager: It is optimized to work with microSD in MIUI.
3. Format the card in exFAT: This will speed up the recording of large files (like 4K video).
4. Limit background activity: In Settings → Battery → Power Saving Mode, add applications that shouldn’t work in the background (e.g. Torrent clients).

For the card speed test, use the A1 SD Bench app (available on Google Play). Normal scores for Redmi 7A:

• 📈 Reading: 20-50 MB/s (depending on the card class).
• 📉 Recording: 10-30 MB/s.

If the speed is lower, try:

• 🔄 Reconnect the card (remove and repaint).
• 🧹 Clear the cache in Settings → Warehouse → Clear the cache.
• 🛠️ Check the card for errors via PC (Chkdsk D team: /f into CMD, where D: is the letter of the disk).

7.Secure extraction and backup

Not removing the memory card hot is one of the main reasons it's damaged. Redmi 7A for safe extraction:

1. Open the Settings → Storage.
2. Tap on point. SD-map.
3. Click on the three dots in the top right corner and select Extract.
4. Wait for the notice. SD-map can be safely removed.

For backup of data from the card:

• 🖥️ Connect your phone to your PC through USB-cable and copy files manually.
• ☁️ Use Google Drive, Mi Cloud to automatically sync photos and videos.
• 📱 Install Swift Backup (root rights required) to create an app backup.

⚠️ Note: If you use the card as internal storage, standard backup methods (e.g., via Mi) PC Suite) may not work. In this case, copy the data manually through the file manager, connecting the phone to the computer in mode. MTP.

FAQ: Frequent questions about the memory card in Redmi 7A