Connecting Xiaomi Redmi 4 to your computer via USB-cable seems like a simple task, but in practice users often face problems: the phone is not detected, files are not transferred or a notification appears «USB-The reason for this may be the wrong settings of the smartphone, the absence of drivers or faulty cable. In this article, we will discuss all the ways of connecting, from the basic mode of file transfer to debugging. USB For developers, and consider common mistakes and their solutions.
The Redmi 4 (Redmi 4/4A/4X/4 Pro) feature is the use of a Qualcomm Snapdragon or MediaTek processor (depending on the version), which affects the choice of drivers for the PC. In addition, the smartphone runs on the basis of MIUI - Xiaomi's proprietary shell, where some USB settings are hidden deeper than in "pure" Android. If you have not previously connected this phone to your computer or updated the firmware, you may need additional configuration.
Preparing for connection: what to check before connecting to a PC
Before you connect Redmi 4 to your computer, make sure that the basic conditions are met:
- 🔌 Correct. USB-Cable: Use original cable or certified cable USB 2.0 Type-A → Micro-USB. Cheap cables often have damaged wires for data transmission (work only for charging).
- 🖥️ Working USB-port on PC: try connecting another gadget (flash drive, mouse) to this port. If they are not identified, the problem is in the port or the drivers of the motherboard.
- 📱 Unlocked screen: on Redmi 4, when connecting to a PC, the screen must be active, otherwise the system may block access to the PC. USB.
- 🔄 Updated firmware: outdated versions MIUI (below 8.0) may have bugs with USB-Check the relevance of the software in the Settings → The phone. → Updating the system.
Also note the default connection mode: in MIUI, it can be set as Charge Only, which blocks file transfers, and can be changed directly when you connect (pop-up notification) or manually in the developer settings.
⚠️ Note: if you connect Redmi 4 to your computer for the first time, the system may request permission to access data. The phone will display a notification "Allow access to data?" - be sure to click Allow, otherwise the PC will not see the files.
Basic connection: File Transfer Mode (MTP)
The most common way to connect is to use MTP (Media Transfer Protocol) mode, which allows you to share files between your phone and your PC. Here's how to do this:
- Connect Redmi 4 to your computer using USB-The phone will be notified «USB for...».
- Swipe down the notification panel and tap on the message «USB-Connection (or Charging through) USB»).
- In the window that opens, select File Transfer (MTP). If this is not the case, see the section "Enable debugging over USB".
- The computer will open a conductor window with folders of the phone (usually this is the internal memory and the phone). SD-map, if it is installed).
If your PC can’t see your phone even after selecting an MTP, check:
- 🔍 Drivers: Windows Device Manager should not have unknown yellow triangle devices (see Installation of Drivers section»).
- 🔄 Rebooting: Sometimes it helps to reboot your phone and computer with a reconnection.
- 📁 Hidden Files: In Windows Explorer, enable the display of hidden items (View) → Hidden elements).
The cable is good and supports data transfer|The phone has a mode selected. MTP|Drivers. ADB/MTP fixed|Phone screen unlocked|PC does not block the connection (antivirus/firewall)-->
If the conductor shows an empty folder or an error “Device not recognized”, try connecting to another one. USB-port (preferably) USB 2.0 on the back of the system unit. USB 3.0 (blue connectors) sometimes conflict with older smartphones.
Installation of drivers for Xiaomi Redmi 4 on Windows
Without the right drivers, your computer won’t be able to recognize Redmi. 4 It's like a storage device. Most of the time, Windows. 10/11 install them automatically, but for stable operation, it is recommended to install official Xiaomi drivers or universal ones. ADB-driver.
Method 1: Automatic installation via Device Manager
- Connect your phone to your PC and open Device Manager (click Win + X → select the appropriate item).
- Find your Redmi 4 on the list of Portable Devices or Other Devices (may appear as an MTP or ADB Interface with an exclamation point).
- Right-click → Update the driver → Automatic search.
Method 2: Manual installation of Xiaomi drivers
- Download the official drivers from Xiaomi: https://new.c.mi.com/global/miuidownload/index (Drivers section).
- Unpack the archive and in Device Manager, select Update the driver → Search on this computer → specify the folder with the drivers.
- After installation, restart the PC.
| Problem. | Possible cause | Decision |
|---|---|---|
| The device is displayed as "Unidentified" | There are no MTP/ADB drivers | Install drivers manually (see above) |
| The phone charges but does not transfer files. | The cable is only for charging or damaged | Try another cable (original) |
| PC sees phone, but folders are empty | Hidden system files or MIUI error | Enable the display of hidden files or reboot the phone |
| Continuously requesting permission to access | Reset USB settings on your phone | In the developer settings, turn off “Revoke USB permissions” |
⚠️ Note: if you install drivers manually, turn off the antivirus temporarily (such as Avast or Kaspersky) as they can block the installation of uncertified drivers.
Enabling debugging over USB for extended access
USB debugging mode is used to work with ADB (Android Debug Bridge), firmware your phone or use specialized utilities like the Mi Flash Tool.
- Open Settings → About the phone and tap on the MIUI version 7 times until the notification “You became a developer” appears.
- Return to the main settings menu and open a new section → For developers.
- Find the USB debugging option and turn it on.
- Connect your phone to your PC. You'll see a request on the screen, "Let me debug over USB?" and check "Always allow from this computer" and click "Allow."
After that, an Android device should appear in Windows Device Manager. ADB Interface. If it's not there, install it. ADB-Drivers separately (you can download from Google or via Google) SDK Platform Tools).
Why do you need USB debugging?
On Redmi 4 with MIUI firmware below version 9.0, USB debugging can automatically turn off after rebooting. To avoid this, turn off the option “Revoke USB Permissions” (if any) in the developer settings.
Solving Typical Connection Problems
Even after setting up the connection correctly, it can be unstable. Consider the most common errors and their solutions:
- 🔄 The phone connects and disconnects cyclically: the problem is a faulty cable or a faulty one. USB-Try another cable and port, and check if the phone overheats (when it overheats). MIUI can block USB).
- 🚫 Mistake «USB-Device not recognized (code 43): reset settings USB To do this, in the developer's settings, find Configuration Reset. USB (or turn off/turn on debugging by USB).
- 📵 The computer can't see the phone, but it's charging: it's probably in Charging Only mode. MTP notification-bar.
- 🔒 Request password/pattern lock when connected: unlock the phone screen. MIUI access USB The screen is locked for more than 5 minutes.
If the problem persists, try resetting the network settings on your phone (Settings → System → Reset → Network Reset) this will remove stored Wi-Fi and Bluetooth connections, but often helps with USB conflicts.
💡
If Windows persistently doesn’t see Redmi 4, try connecting it to another computer (like macOS or Linux), and if it does, the problem is exactly in the drivers or settings of your PC.
Alternative ways to transfer files without USB
If the USB connection still doesn’t work, use alternative methods:
- 🌐 Wi-Fi via Mi Drop or FTP: Install the Mi Drop app on your phone (available from the Mi App Store). Open the app, select files and click "Send." On a PC, open the address you have in your browser (e.g, http://192.168.1.100:8080).
Cloud services
Mi Cloud
Google Drive
Yandex.Disk
Bluetooth
For regular synchronization of files (photos, music), it is convenient to use Mi PC Suite, the official software from Xiaomi. Download it from pcsuite.mi.com, install and connect your phone in MTP mode. The program allows you to manage contacts, messages and backups.
Security when connecting to a computer
Connecting Redmi 4 to a PC is not only a convenience, but also a potential risk.
- 🛡️ Do not connect your phone to public computers (in Internet cafes, airports) and they may contain malware that copies your data.
- 🔐 Use screen lock: even if the phone is connected to a PC, install PIN-code.
- 🚫 Turn off the debugging. USB After use: this mode opens access to system files, which is dangerous when connecting to other devices.
- 📂 Check the transmitted files with antivirus: both on your phone (for example, Avast Mobile Security) and on your PC.