Xiaomi’s current smartphones have huge amounts of internal memory, but even they don’t always cope with the growing flow of data. 4K, Backups or working documents, in such situations, the fastest and most reliable solution is to use external documents. USB-storage.
USB On-The-Go (OTG) technology can turn your gadget into a full-fledged computer that can read and write information from flash drives, hard drives and even keyboards. Owners of Redmi and POCO devices often wonder why the system does not see the media after a physical connection. In this article, we will discuss all the nuances of settings, file system formats and ways to solve common problems.
The connection process is simple, but requires understanding the features of the MIUI shell and HyperOS. Proper preparation of the drive and the choice of a quality adapter ensure a stable data transfer rate. Let's consider a step-by-step algorithm that will help you access files instantly.
OTG support check and adapter selection
The vast majority of modern Xiaomi models released in recent years 5-7 years, maintain the function OTG This means that the processor and the power controller are capable of producing voltage. 5 volt-on USB-However, in older or budget entry-level models, this option may not be physically available.
To connect, you will need a special adapter, which is often called a “crut” or a “crutch”. OTG-On one end of this adapter is a Micro-USB or Type-C connector (depending on the port of your smartphone), and on the other end is a classic one. USB-A The quality of the cable's execution has a direct impact on data rate and connection stability.
When choosing an accessory, pay attention to the following characteristics:
- 🔌 Type of connector: Make sure the plug matches your phone’s charging port (Type-C or Micro-USB).
- ⚡ Support USB 3.0: If your flash drive and phone support high speeds, a cheap cable can limit data transfer to the 2.0 standard.
- 🛡️ Material of the case: metal cables better remove heat and are protected from inflections.
- 📏 Cable length: too long wires (more than 20 cm) can cause a voltage drop, which will not determine the disc.
Some users try to use conventional charging cables by soldering them or using adapters designed only for power transfer. This will not work, since a special jumper between contacts is required to activate the host mode. If you are not sure about compatibility, it is better to purchase a certified accessory from the official store.
Physical connection and system response
The process of connecting the drive to the device is as simple as possible for developers. You don't have to search for hidden menus or activate debugging mode. USB-You put a flash drive in the adapter, and then you plug the entire design into the smartphone, and the system has to automatically recognize the new device.
In the upper right corner of the screen or in the notification area (curtain) will appear the appropriate icon USB-The storage device. MIUI 12, 13, 14 or a new HyperOS, the notification can be brief and disappear in a few seconds.In this case, check the notification center by pulling the curtain down.
Sometimes the system asks for permission to access the data. USB-This is a standard Android security measure that prevents apps from accessing your files unauthorised by clicking "Allow" or "OK" so that the file manager can display the contents of the flash drive.
☑️ Connection check
It is important to understand that when connecting power-intensive devices such as external hard drives (HDD), The power of a single port may not be enough, and in such cases, the disk may be clicking or constantly reconnecting. HDD Often a Y-shaped cable with additional power is required or the use of powered-hub (active) cable is required. USB-splitter).
File system configuration and formatting
One of the most common reasons Xiaomi doesn't see the flash drive is file system incompatibility. Android is based on Linux, but it uses universal formats to ensure compatibility with Windows and other OSes. The most common are FAT32, exFAT and NTFS.
The FAT32 format is the most compatible, but has a critical drawback: it doesn't support file recordings larger than 4GB. If you plan to port movies in high resolution, this option won't work. NTFS is native to Windows and is free of file size restrictions, but on Android it often requires installing additional drivers or plugins for the file manager.
The best choice for most Xiaomi smartphone users is the exFAT file system. It supports files of huge size and works perfectly with large amounts of memory, maintaining high write speed. You can check the current format and change it if necessary directly in the phone settings.
For formatting, follow the following steps:
- Connect the flash drive to your smartphone.
- Go to the Settings menu.
- Select About Phone or Warehouse (the path may vary in different versions of MIUI).
- Find the section USB-drive and press format.
What to do if the phone offers to format the disk?
Remember, formatting completely removes all data from the media. Copy important documents in advance to your computer or to the cloud. Once the procedure is complete, the flash drive will work stably and quickly in conjunction with your gadget.
Working with files through a conductor
Once successfully connected and formatted, files are accessed through the standard File Manager app, which in Xiaomi has a yellow icon with a folder, and the interface is intuitive and divided into categories for quick access.
At the top of the screen or in the side menu, you will see a list of available storages.Internal memory is usually denoted as "Internal drive" and the connected flash drive will be called «USB-drive" or have a letter designation. Switching between them is a simple tap.
The basic file operations are done through the context menu, so you can copy a photo from your phone to your flash drive.
- 📂 Open your internal memory and find a folder. DCIM download.
- ✋ Press and hold your finger on the file to highlight (you can select several).
- 📑 In the menu that appears, select “Copy” or “Move».
- 💾 Go to section. USB-the storage device and press "Insert».
Copy speed depends on your USB flash drive class and version USB-When working with large amounts of data, the smartphone can get a little warmer — this is the normal response of the controller to the active load.
| Parameter | FAT32 | NTFS | exFAT |
|---|---|---|---|
| Max. File size. | 4GB | 16 TB | 16 TB |
| Compatibility with Android | Native. | Often requires drivers | Native. |
| Compatibility with Windows | Complete. | Complete. | Complete. |
| Compatibility with macOS | Reading/Recording | Only reading. | Reading/Recording |
| Recommendation | For documents | For PCs. | For Xiaomi. |
Advanced Features: Launching Apps and Games
Connecting a flash drive gives you access not only to media files, but also to install applications. APK-Files on a computer, burn them to a storage device and install them on a phone without using the Internet, which is especially true for devices that do not have Google Play Services, or for installing modified versions of programs.
To install the application, just find APK-file on the flash drive through the conductor and click on it. MIUI can warn you about the dangers of installation from unknown sources. You will need to go to the settings at the link in the notification and allow installation for a specific application (for example, for Explorer or Chrome).
Some users try to run heavy games or emulators right from the flash drive. Although technically possible, random read speeds can be used to run them (IOPS) bal USB-The storage devices are often lower than the phone's internal memory, which can lead to long level loads and micro-freezes in games.
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Use the flash drive as a portable archive for rare applications. Install the game, play, and then delete it, freeing up space, leaving the installer on the USB drive for quick reinstalling in the future.
You can also connect other peripherals through OTG, such as wired headphones (if you don't have a 3.5mm connector), gamepads, mice and keyboards. When you connect your mouse, you'll have a cursor on your screen, which allows you to control your smartphone if the touchscreen is damaged, which is a great way to save data from a broken phone.
Troubleshooting and frequent errors
Despite the simplicity of the technology, users often face problems, the most common of which is that the phone charges from the flash drive but does not see its contents, which indicates that the power lines are working, but data is not communicating, and the reason may be the absence of a file system driver or a physical failure of the adapter.
If the flash drive is detected but the files are not copied or copied at zero speed, check the status. USB-It is often clogged with pile and dust in your pocket, which prevents contact from being tight. Carefully clean the port with a wooden toothpick or antistatic brush.
⚠️ Attention! If you plug in a flash drive, the phone starts to run out quickly or heats up a lot at the top, turn off the device immediately, there may be a malfunction of the power controller or a short circuit inside the drive.
In rare cases, the problem lies in the software failure of the shell. MIUI. It helps to reboot the device with the connected drive. If that doesn't help, try plugging the flash drive through the drive. USB-hub with external power - this will eliminate the lack of current.
It’s also worth mentioning the “safe extraction” problem: Unlike computers, Android doesn’t have a “Safe Device Removal” button explicitly. However, to avoid data loss, before physically turning off the flash drive, it is better to turn off the screen or close all applications that work with files. In some versions of the firmware, there is a button in the notification curtain. USB-accumulator».
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90% of connection problems are solved by formatting the flash drive in exFAT or replacing the cheap one. OTG-adapter.