The lack of internal storage is a problem that almost every Xiaomi or Redmi smartphone owner faces after a year or two of active use. MIUI is famous for its optimization, but it also takes a significant place, leaving the user less free space for games, photos and instant messengers. When memory filling notifications begin to appear more often and new applications refuse to install, the only way out is to expand the available volume.
The most effective and effective way to solve this problem is to use external SD-However, unlike older versions of Android, modern Xiaomi shells don’t allow you to just press a button and transfer all the data. In this article, we will discuss in detail all available methods, from standard settings to advanced developer tools.
It's important to understand that app porting isn't always a panacea. Some system processes and critical Google Play services will still take up internal memory. However, a good data distribution will significantly offload the main drive and speed up the device. Let's look at how to prepare the map properly and what steps to take.
Preparation of memory card and smartphone for work
Before you start transferring data, you need to make sure that your memory card meets the requirements of a modern mobile system. Using an old or slow card can lead to applications running longer and the system will work unstable. For comfortable work, it is recommended to use cards of the Class 10 or UHS-I standard and higher.
The first step is to check the physical status of the card. If you are using a card that already has data stored on it, it is strongly recommended to back it up on your computer. The formatting process, which is often required for proper application operation, will destroy all information. Put the card in the smartphone slot and wait for the corresponding notification to appear in the status bar.
⚠️ Warning: Do not use cheap memory cards of unknown brands to install applications. Low write speed can cause "freezes" in games and errors when updating programs, as the system will wait for a response from the drive.
Once installed, the system will suggest setting up the drive, where Xiaomi users have two options: use the card as a portable storage device or try to integrate it into the system. The standard Portable Storage mode allows you to store photos, videos and music, but does not give direct access to installing applications.
- 📱 Make sure your smartphone is turned off before removing or installing the card if it is not supported on a hot basis».
- 💾 Format the map into the file system FAT32 or exFAT via phone settings for maximum compatibility.
To activate advanced memory functions, you often need to turn on the developer mode. This is a hidden section in the settings that gives you access to the engineering menu. To activate it, go to Settings → About phone and quickly click 7-10 times on the MIUI version. After the message “You became a developer”, a new section “Additional” or “Extended settings” will appear in the settings menu.
Standard methods of transfer through MIUI settings
The MIUI shell interface provides basic memory management tools, but they are limited depending on the Android version. In most cases, you can transfer not the entire application, but only its cache and part of the data, which already allows you to free up several gigabytes of valuable space in internal storage.
To start, go to Settings → Memory. Here you will see a space usage graph and a list of categories occupying volume. By clicking on Apps, you will be taken to a list of all installed programs. Choose the application that takes up the most space (usually social networks or navigators).
In the menu of the selected application, find the "Change" or "Memory" button. If the system allows transfer, the option of selecting will be active. SD-Once confirmed, the system will start the data migration process, and the speed depends on the amount of files being transferred and the speed class of your card.
⚠️ Note: When transferring the application to SD-widgets and some features may stop working correctly until the device is fully restarted.
It is worth noting that many modern applications, such as Instagram or Telegram, manage their data themselves and may not have an active port button, in such cases, the standard methods of moving only the media files stored by these applications through the file manager.
Using a Developer Mode for Forced Transfer
If the standard menu doesn't allow you to migrate the app, Android's hidden settings come to the rescue. In developer mode, there's a feature that makes the system consider the external card a priority storage for new and existing programs, a more aggressive method that requires caution.
Once you have enabled the Developer Mode (as described in the first section), go to Settings → Additional Settings → Developer Mode. In this list, find the option “Force allow apps on external media.”
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Once this feature is enabled, be sure to restart your smartphone. The changes only take effect after the full cycle of the device's power on.
Once you reboot, go back to your app settings. Many programs that didn't have this option before may now have portability. However, keep in mind that system stability may decline as some Android components aren't designed to work with slow external drives.
It is important to understand the difference between transferring yourself. APK-The developer mode often allows you to move exactly the executable file, freeing up space in the system partition, but the cache can remain on the internal disk.
- ⚙️ Find the item associated with Default storage location in the developer menu).
- 🔄 Change the value to SD Card, if such option is available in your firmware version.
- 📲 After changing the settings, re-install the necessary applications - they will immediately stand on the map.
Transferring multimedia data and application cache
The safest and most efficient way to free up space is to move heavy media content, apps like Telegram, WhatsApp and Viber storing thousands of photos and videos that are written into internal memory by default, and changing the way you save them in the settings of the apps themselves is key.
Go to the messenger settings, look for the data and memory section or the data storage section, and it should have the option "Save Path." Select yours. SD-From now on, all new files will be uploaded to an external drive, and the old files will have to be manually moved through the file manager.
To move the already accumulated garbage, use the standard File Explorer or the more advanced File Manager from Xiaomi. Android/media or DCIM, Select heavy videos and select the “Move” function» → «SD-map».
☑️ Checking the vacancy of the place
Don't forget the Download folder, and often people forget about downloaded game installers or documents that take up gigabytes. SD-The card does not affect the operation of the system, but gives a rapid increase in free space.
Storage Comparison: Internal Memory vs. SD
Users often wonder if it’s worth migrating apps at all if it could slow down the phone. To make an informed decision, you need to understand the technical differences between embedded flash memory (eMMC/UFS) and external microSD cards.
The built-in memory of Xiaomi mid- and high-end smartphones uses UFS 2.1 or UFS 3.1 interfaces, which provide read and write speeds (up to 1000 MB / s). A normal memory card, even a good one, rarely exceeds the speed of 90-100 MB / s. This is a tenfold difference that is noticeable when you start "heavy" games.
| Parameter | Internal Memory (UFS) | SD-card (Class 10) | Influence on the user |
|---|---|---|---|
| Reading speed | High (500+MB/s) | Medium (80-100 MB/s) | Longer loading levels in games |
| Recording speed | Very high. | Low (20-40 MB/s) | Slow saving of photos/video |
| Reliability | Tall (swept) | Medium (contact connection) | Risk of data loss on impact |
| Price per GB | Tall. | Low. | SD-map is more profitable for archives |
And you can see from the table that only those applications that don't require high disk speeds make sense to map, and they can be e-books, simple utilities, calculators, or offline maps. SD-heavy-handed 3D-Games or work tools like Office are not recommended.
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Optimal strategy: keep active applications on internal memory, and transfer media files and archive data to the internal memory. SD-map.
Typical errors and problem solving during transfer
In memory optimization, users often encounter errors, and one of the most common is the message "Not enough memory" even when there is a free memory. SD-This is because the system still needs space in the internal buffer for temporary operation files.
Another common problem is the disappearance of widgets or icons after transfer, which is treated by restarting the launcher or completely restarting the device. If the application stops opening, try clicking Stop in the application settings and then running it again.
⚠️ Note: If you format a card as an “Adoptable Storage,” it will be encrypted and you will not be able to read it on a computer or other phone without re-formatting and losing data.
Also worth mentioning is the update problem: some apps try to download temporary files to internal memory when updating. If there is critically little space (less than 500 MB), the update may freeze. Always leave a small reserve on the system partition.