Xiaomi Redmi 7 is a budget smartphone with good specs, but many users still do not know that it supports the technology. USB OTG (On-The-Go. This feature allows you to connect flash drives, keyboards, mice and even game controllers to your phone via a standard microUSB connector. OTG It may be disabled or hidden in the settings.
In this article, you will learn how to check for OTG support on your Redmi 7, activate the feature through a menu or engineering menu, and solve typical device connectivity problems. We will explore all the ways from standard to alternative, including using third-party applications.
What is OTG and why you need it on Xiaomi Redmi 7
USB On-The-Go (USB OTG) technology turns your smartphone into a full-fledged host device capable of managing the periphery, which in practice means that you can connect to Redmi 7:
- 💾 Flash drives (USB-flash drives, external drives SSD/HDD supplementary)
- 🖱️ Mouse and keyboards (wired and wireless with USB-receiver)
- 🎮 Gamepads (such as Xbox or PlayStation controllers)
- 📷 Cameras (for direct transmission of photos/video)
- 🔊 Sound cards (external) DAC sound-enhancing)
For Redmi. 7 OTG This is especially useful because of the limited amount of internal memory (16/32 GB in basic versions. With a flash drive on 128 With a GB or external hard drive, you can store movies, music and documents without taking up space on your phone, OTG Simplifies file transfer between devices without using cloud services or a computer.
⚠️ Attention: Redmi 7 supports OTG It's only through a microUSB connector. It's designed to connect modern devices with USB-C You'll need an adapter, and you'll also need to keep in mind that the phone won't be able to power the outside. HDD power source.
How to check if your Redmi 7 OTG supports
Not all versions of Redmi 7 have OTG hardware support, although most do.To make sure your smartphone is compatible, follow the following steps:
- Download the free USB OTG Checker app from Google Play (Chainfire developer).
- Connect. OTG-cable to phone (even without a flash drive).
- Run the app and wait for the result. If you see the word "OTG supported," your Redmi 7 is ready to go.
The alternative is to check the specifications of your model.
- Go to Settings → About the phone → All the characteristics.
- Find the line "USB OTG." If it is and marked as "Supported" - the function is available.
If none of the methods worked, your Redmi 7 may be a rare batch without OTG.
The standard way to enable OTG on Xiaomi Redmi 7
In most cases, the OTG on Redmi 7 is activated automatically when the device is first connected, but if the feature doesn't work, try turning it on manually:
- Connect. OTG-cable to the phone (on the other hand, you can temporarily insert a flash drive or mouse).
- Open Settings → Connections and Sharing → USB.
- In the USB Mode section, select File Transfer (MTP).
- Return to the main settings menu and go to Additional → Special features.
- Find the USB OTG and move the slider to the right.
If you don't have USB OTG on the menu, it doesn't mean it's disabled, it's probably already active by default. Try plugging in the device -- if the phone recognizes it, it works.
Buy OTG-cable with microUSB (length not more than 20 cm)
Check the compatibility of the flash drive (FAT32/exFAT)
Charge your phone at least 30%
Disconnect the energy saving mode
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Activate OTG through the Engineering Menu (for power users)
If the standard method didn't work, you can try turning on OTG through the engineering menu, which requires caution, as the wrong actions can disrupt the phone.
Instructions:
- Open the Phone app and enter the combination: ##36446337###.
- You will be taken to Engineering Mode. Go to Hardware Testing.
- Select "USB OTG Test" (or "USB Settings" in some firmware versions).
- Activate the option "Enable OTG" and save the settings.
- Reboot the phone.
⚠️ Warning: Do not change other options in the engineering menu unless you are sure of their purpose.This may cause a malfunction in the Redmi 7, including problems with the sensor or mobile network.
After restarting, try connecting the device via OTG. If the feature still doesn't work, check:
- 🔌 Quality. OTG-cable (try another one)
- 📱 Firmware version (update to the latest via Settings) → Updating the system)
- 🔄 Regime. USB (It should be “file transfer” and not “charge")
Solving problems with OTG on Xiaomi Redmi 7
Even if you have OTG on, you may encounter some common problems, and here are the most common ways to fix them:
| Problem. | Possible cause | Decision |
|---|---|---|
| The phone doesn't see the flash drive. | Incompatible File System (NTFS) | Format the flash drive in FAT32 or exFAT via PC |
| The device is connected but not working. | Lack of power (e.g. for HDD) | Use an externally powered or active hub OTG-cable |
| OTG is not operating in a stable way (disables) | The energy saving mode shuts down USB-port | Turn off battery optimization for applications running OTG |
| The phone overheats when using OTG | High load on the processor | Use OTG in short sessions (no more than 30 minutes) |
If the flash drive is detected but the files are not opened, check:
- 🔒 Access rights – some files may be hidden or blocked
- 📂 Data format: Redmi 7 does not support NTFS rootless
- 🛠️ File system integrity – connect the flash drive to the PC and perform error check
💡
If you use it often OTG To transfer files, create a shortcut on the home screen for quick access to the folder "USB-To do this, hold your finger in the free space of the screen. → "Widgets" → "Labels" → Select "Files" and specify the path to the connected flash drive.
Applications for managing OTG on Xiaomi Redmi 7
Standard facilities MIUI It is not always convenient to work with OTG-Let's look at the best apps that empower people:
- 📁 Total Commander – File Manager with Support OTG, convenient interface and the ability to archive data directly on the flash drive.
- 🖱️ USB Mouse Helper – Optimizes the mouse by adding gestures and hotkeys.
- 🎵 USB Audio Player PRO — allows the use of external DAC high-quality.
- 🎮 Octopus – gamepad emulator for games (supports Xbox and PlayStation controllers).
To install applications:
- Download. APK-file from the official developer website (for example, Total Commander).
- Connect the flash drive via OTG and copy the APK to it.
- Open Files on your phone, find the APK on the flash drive and install it by allowing installation from unknown sources.
⚠️ Note: When using applications for OTG Turn off battery optimization for them, otherwise the system may force the program to close when the devices are connected. → Annexes → Application management → Optimizing the battery.
How to update the firmware for better OTG support?
Alternative ways to connect devices without OTG
If the OTG on your Redmi 7 never worked, there are workarounds:
- 🌐 Cloud Services – Upload files to Google Drive or Mi Cloud and then download them to your phone.
- 📶 FTP-Server – install FileZilla Server on your PC and on your phone — FX File Explorer with support FTP.
- 🔄 Bluetooth – You can use Settings to transfer small files (up to 50 MB) → Bluetooth.
- 📡 Local area network – connect your phone and PC to the same Wi-Fi network and use apps like Send Anywhere.
To transfer files from a flash drive without OTG:
- Connect the flash drive to the computer.
- Copy the files to the cloud (Google Drive, Yandex Drive).
- Open the cloud on your phone and download the files.
These methods are less convenient than OTG, but will help in situations where direct data transfer is not possible.
💡
If the OTG is not working at all, check the physical condition of the microUSB port. Often the problems are caused by contamination or mechanical damage to the connector. Clean the port with a soft brush and check the contacts for integrity.