Xiaomi smartphones today have a huge amount of internal memory, but it often comes down to a situation where you need to quickly download several gigabytes of movies, music or work documents without using the Internet. Direct copying from an external drive is the fastest and most reliable way to expand the capabilities of your device. OTG (On-The-Go), supported by most Redmi and POCO models, allows you to turn the phone into a full-fledged file hub.
The data transfer process has become much easier with the release of new versions of the MIUI shell and HyperOS. You do not need complex programs or a computer as an intermediary. You just need to have a compatible adapter and a properly prepared drive. In this article, we will discuss in detail all the stages of connection, setting up the file system and solving typical errors that users encounter when working with the external periphery.
Preparation of equipment and compatibility check
Before starting the procedure, make sure that your smartphone is technically capable of working with external drives. Virtually all Xiaomi devices released in the last 5 years support the USB OTG standard, but the physical connector may differ. Modern models with a Type-C port will require an appropriate adapter or cable with two different connectors. Owners of older devices with a Micro-USB connector need to purchase a special OTG adapter.
The critical point is power. If you plan to connect bulk hard drives or flash drives with an active LED, the battery charge of the phone may not be enough for their stable operation. USB-It is also worth checking the integrity of the contacts on the drive itself, as oxidation can cause malfunctions in the definition of the device by the Android system.
⚠️ Attention: Do not connect to the phone USB-drives with voltages above 5 Volts without using an active hub, this can damage the power controller of the smartphone motherboard.
There is a common misconception that you need to enable OTG in manual settings. In reality, on Xiaomi smartphones, this option is activated automatically when a compatible device is detected. If nothing happens after you connect, the problem lies either in a faulty cable or in the drive file system that the phone cannot read.
File systems: FAT32, exFAT and NTFS
Android, and in particular the MIUI shell, has strict requirements for formatting external drives. The most versatile and supported format is FAT32. It guarantees maximum compatibility with all devices, but has a significant limitation: you can not write a file larger than 4 GB to a disk.
Xiaomi’s more advanced models, especially its flagship series and mid-range devices, support the exFAT file system. It’s free of file size restrictions and works great with large amounts of data. However, if your phone model is budget or has an outdated version of Android, the system may simply “not see” a flash drive formatted in exFAT or NTFS.
- 📁 FAT32 — Maximum compatibility, file restriction to 4GB.
- 💾 ExFAT – Support for large files, works for most new Xiaomi.
- 💿 NTFS — Windows file system, often requires third-party apps to read on Android.
If the phone doesn't see the flash drive, it's probably formatted in NTFS. In this case, it needs to be reformatted on the computer. Note that the formatting process will completely destroy all data on the media, so pre-copy important information on the PC.
How to format a flash drive in exFAT on Windows?
Instructions: step-by-step file transfer
The process of copying data in the environment MIUI And HyperOS is unified and runs through a standard file manager. Once the flash drive is physically connected to the charging port, the system notification of the connection should appear on the screen. USB-Click on it for quick access to the control menu or just swipe down the top notification curtain.
To get started, open the standard File Manager app. At the bottom of the screen, you'll see sections that will include a new item, usually called USB or the brand name of your flash drive. Going to this section, you'll get access to all files on an external medium.
☑️ Copying algorithm
Select the files you need with a long press. In the menu that appears, select Copy or Move, and the difference is significant: copying will create a duplicate of the data, taking up space on both the flash drive and the phone, and moving will remove the original from the external media after the operation is completed.
Next, the navigation menu will suggest selecting a destination folder, and most users choose Internal Memory, where it is important to correctly determine the target directory: photos should be placed in DCIM, music in Music, and documents in Download or Documents, which will help the system automatically index files and display them in the corresponding applications (Gallery, Player).
⚠️ Note: When moving large amounts of data (over 10 GB), do not turn off your phone screen and make sure that the battery is above 20% to avoid interruption and damage to the file table.
After selecting a folder, click the Paste button, and the speed of the copy will depend on the speed class of your USB drive and the version of the USB port, which can take from a few seconds to tens of minutes.
Use of Third-Party File Managers
Xiaomi’s regular Explorer is functional, but it can sometimes misrepresent hidden folders or specific file formats, and third-party solutions from the Google Play Store come to the rescue, with FX File Explorer, Solid Explorer and ES Explorer apps leading the way.
These programs have advanced access rights and can work with archives, network storage and cloud services simultaneously. For example, Solid Explorer allows you to open two windows at the same time, which is extremely convenient for dragging files between the flash drive and internal memory using the Drag-and-Drop method.
| Annex | Support for plugins | Interface. | Price. |
|---|---|---|---|
| FX File Explorer | Yes (Network, USB) | Classical. | Freemium |
| Solid Explorer | Built-in. | Double-panel | Paid |
| Files by Google | No. | Minimalism | Free of charge. |
Using third-party software is especially important if you need to unpack the archive directly from a flash drive or rename the file packet.The standard MIUI interface may limit some activities for system security reasons.
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To work with system folders through a third-party explorer, you may need to provide special permissions through the Access to Data menu in the phone settings.
Problem Solving: The phone can't see the flash drive
The situation when the smartphone ignores the connected drive is one of the most common. First of all, check the physical connection: is the adapter sitting tight in the port? Often the cases interfere with the full immersion of the connector, which causes the contact to not close. Remove the security case and try to connect the device again.
If everything is physically OK, but there is no reaction, it is probably the file system. As mentioned earlier, Android out of the box is not friendly with NTFS. Connect the flash drive to your computer, check its properties. If it says the NTFS format, format the disk in FAT32 or exFAT. Also, the problem may lie in the partition scheme: some flash drives have a hidden boot partition that confuses Android.
In rare cases, manual USB debugging is required, although it is not required for regular USB drives. Go to Settings → About Phone and 7 times click on the MIUI version to become a developer. Then, in the advanced settings, check if there is a restriction on using USB only for charging.
⚠️ Warning: If the phone makes a connection sound but doesn't display files, it's possible the flash drive is logically corrupted.
Sometimes it helps to just reboot a device with a flash drive already connected, and it allows the system to re-submit the survey. USB-ports and run the necessary drivers in the background.
Safely extract the storage device
Many users simply pull the flash drive out of the plug, which is a bad practice. Although modern file systems log changes, the risk of data corruption when writing at the time of disconnection remains high, which can cause the flash drive to stop reading at all.
To get the job done correctly, Xiaomi has a software shutdown mechanism. Put the notification curtain down. USB-You can click on the device with the button Disable or Safe Removal, and you can wait for the message that the drive can be removed.
The alternative path is in the settings. Go to Settings → Memory (or Storage). In the list of devices, find your flash drive and click Remove. Only after the corresponding icon disappears in the notification curtain, the physical shutdown becomes secure.
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Always use software shutdown before physically removing the flash drive to prevent data loss and corruption of the file system.
Compliance with these simple rules will prolong the life of both your data and the drive itself, and regular backup of important information from a flash drive to cloud services or PC will be an additional insurance against technical failures.