How to Include OTG on Xiaomi: The Complete Guide

Today’s Xiaomi and Redmi smartphones have evolved into powerful handheld computers that can perform tasks that were previously only possible for laptops. One of the key features that expand the device’s capabilities is OTG (On-The-Go) technology, which allows you to connect external drives, keyboards, mice and even gamepads to your phone without the need to use a computer.

Many users are faced with confusion: where to look for a switch, why the flash drive is not readable, or whether special activation is required in the menu. Unlike some other brands, the MIUI shell and the new HyperOS approach to managing external devices is implemented differently. Often the function works automatically, but requires the correct configuration of the file system or debugging.

In this article, we will discuss in detail all the nuances of the work USB-You will learn how to check the compatibility of your gadget, what file formats are supported out of the box and what to do if the connection does not happen. We will also discuss the power issues of external devices and how to solve common errors.

What is OTG and why it is necessary on a smartphone

USB On-The-Go technology allows the mobile device to act as a host, that is, the main control element in the computer-periphery pair. In normal mode, the smartphone charges or transmits data to the PC, acting as a client. When activated, the OTG mode, the phone begins to supply power to the external port and control the connected equipment.

This opens up a lot of possibilities for expansion, you can instantly copy gigabytes of photos from a flash drive, connect a wired keyboard to type, or use an external hard drive to store movies. RAW-files directly to the phone for processing - a real lifeline.

⚠️ Note: When connecting energy-intensive devices, such as external hard drives without their own power, the smartphone may not be able to cope with the current output. USB-powerhouse.

It is important to understand the difference between software support and physical implementation, even if there is no explicit switchboard in the system. OTG», It doesn't mean that the function is disabled. In most cases, the controller in the Snapdragon or MediaTek processor is ready to work immediately, the limitation can only be a software ban or a lack of power.

Verifying the technology support of your device

Before looking for customization, make sure your particular device physically supports host mode. Virtually all modern Xiaomi models released in the last 5 years have this feature at the hardware level.

The most reliable way to verify this is through specialized diagnostic applications, like USB OTG Checker, which analyze system files and kernel reports to give you an accurate result, and if the application reports full support but the device doesn't work, the problem is with the software settings or the cable.

You can also use the built-in diagnostic tools MIUI. The Engineering Menu contains status information USB-This is a more complex path, requiring the input of special codes, but it provides comprehensive technical information.

Keep in mind that support may depend on the firmware version. Global versions of MIUI Global sometimes differ from China's MIUI CN in port energy management. If you've been reflashing the device or installing custom build, make sure the kernel contains the necessary drivers.

Do I need to manually enable OTG in the settings?

This is the most common question among users. Unlike Oppo, Vivo or Realme smartphones, where the OTG switch is in the basic settings and turns off automatically after 10 minutes, Xiaomi is not the case.

Function USB-shelled MIUI And HyperOS is activated by default, and it doesn't have a separate switch on the menu. It automatically detects peripheral connectivity and restructures the logical structure of the ports. You don't have to search for hidden menus to activate the basic data transfer.

• 🔌 Connect the adapter. OTG smartphone-charging connector.
• 📁 Wait for the notification “Connected” to appear USB-device».
• 📂 Open the Explorer or Files app to access data.
• 🔋 Keep an eye on the level of charge as there is an active discharge.

However, there is a nuance with the function USB Debugging (Debugging by Debugging) USB). For some types of complex devices or for the use of specific commands ADB This option needs to be manually activated, and this is done through the Developer Menu, which is hidden by default.

If you don't see any reactions after you're connected, try restarting the device with the adapter already inserted. Sometimes the USB driver doesn't have time to initialize correctly when you're hot, especially if you're using a cheap adapter.

Working with file systems and conductor

The key to a successful connection is file system compatibility. Android, and MIUI in particular, read FAT32 and exFAT formats perfectly out of the box. These are standard systems for flash drives up to 64 GB and most modern memory cards.

Things get complicated if you plug in a hard drive or a flash drive formatted into NTFS, Windows' native file system. By standard means, many versions of Android don't know how to write data to NTFS, although reading can work.

To work with NTFS without data loss, it is recommended to use file managers with built-in drivers, for example, Microsoft exFAT/NTFS for USB by Paragon or MLUSB Mounter. These applications create a virtual shell that allows the system to see the disk as native.

⚠️ Attention: Formatting a flash drive through a phone will destroy all the data on it. NTFS, Do not agree to formatting in FAT32, Until you copy the data to your computer.

Xiaomi’s built-in Explorer (Files) is smart enough to offer formatting when you first connect an incompatible drive. Be careful when you press the buttons in this dialog box. Prepare the media on your PC in advance.

Connecting peripherals: keyboards, mice and gamepads

OTG isn't just limited to flash drives. You can turn your smartphone into a minicomputer by plugging in a keyboard and mouse. The mouse cursor will appear on the screen automatically, and the keyboard will allow you to quickly type messages or work in office applications.

Gamers will appreciate the ability to connect wired gamepads, most modern controllers that are compatible with Xbox or PlayStation, as well as versatile controllers. USB-The joysticks are defined by the system immediately. In the game settings, you only need to select the method of entering "Gamepad».

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Use it. USB-Powered hub if you plan to connect a keyboard, mouse and flash drive at the same time.

For professional work with video or photo, you can connect an external DAC (digital-analog converter) via USB. This will allow you to get high-quality sound on studio headphones, bypassing the limitations of the built-in audio track of the smartphone.

It is important to note that some types of devices require additional applications to be installed, for example, Ethernet adapters (wired internet) may require a PPP Widget app or built-in support in the kernel, which is typical of newer Xiaomi models.

Problem Solving and Frequent Connection Errors

If the device is not detected, the first cause is insufficient power. A smartphone can simply “plant” the voltage on the port, trying to start a heavy external disk, which will help active charging or a hub with an external power supply.

A second common problem is poor-quality adapter cables: Cheap Chinese adapters often don’t have the right resistors to identify host mode; the phone thinks it’s connected to a charger, not a periphery; replacing the cable with a branded one (like Baseus or Ugreen) solves the problem 90 percent of the time.

It's also worth checking the energy saving settings. MIUI Aggressive optimization can block the supply of power to USB-port to save battery. Try turning off Power Saving mode before connecting.

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If the phone doesn’t see the flash drive but sees the keyboard, the problem is in the file system or drive format, not the port.

For advanced users, a method of checking logs via ADB is available. Connecting the phone to a PC, you can run the adb logcat command and view system messages when the device is connected. Errors like “usb 1-1: device descriptor read/64, error -74” will indicate a physical malfunction or incompatibility.

Questions and Answers (FAQ)