The Xiaomi Mi 4, released in 2014, remains in service for many users as a reliable second device or budget option for basic tasks. However, owners often face difficulties in initial configuration, especially when it comes to connecting to modern networks and computers. Compatibility problems arise due to outdated security protocols and the lack of official support from software manufacturers on modern operating systems.
In this guide, we will take a look at all aspects of digital integration. You will learn how to properly install drivers, configure the access point, and solve typical connection errors that occur when using older Android devices in 2026-2026. It is critical to consider that standard MIUI firmware based on Android 6.0 may not support the latest WPA3 encryption protocols without third-party patches.
The connection process requires attention to detail, as the settings interface in older versions of the MIUI shell is different from modern counterparts. We will look at both wired and wireless synchronization methods, ensuring maximum functionality of your device.
Preparation for synchronization and inspection of equipment
Before you start any manipulation, you need to make sure that the physical interface and cable are working properly. For the Xiaomi Mi 4, you use a Micro-USB connector, which can become loose over time. Use only a high-quality cable that can transmit data, not just charge the battery, since cheap analogues often lack internal contacts to transfer information.
You should also check the port status on your computer. If you use a fixed PC, it is preferable to connect the device to the ports. USB 2.0 on the back of the motherboard, bypassing the front panels of the case and USB-hubs that may not provide enough voltage for stable operation.
- 🔌 Check the integrity of the Micro-USB cable and the absence of contact oxidation.
- 🔋 Charge your smartphone to a minimum 40-50% avoiding sudden shutdown.
- 💻 Make sure that the latest operating system updates are installed on your computer.
An important step is to enable debugging via USB if you plan to interact deeply with the system through ADB or specialized software, a feature hidden in the developer menu, which is deactivated by default.
☑️ Checking before connection
⚠️ Warning: Do not connect the device to public charging stations in shopping centers or airports to transmit data.This can lead to personal information leakage or virus infection through the port USB.
Connecting Xiaomi Mi 4 to your computer via USB
Once the cable is physically connected to your PC and smartphone, a notification of the connection mode will appear on the screen of the mobile device. By default, Android selects Charge Only mode, which makes files inaccessible to your computer. You need to manually switch this setting.
Lower the notification curtain and click on the appropriate notification. In the menu that opens, select MTP (Media Transfer Protocol) or File Transfer mode. If the computer is not responding, there may be no necessary drivers for older Xiaomi devices.
The official Mi PC Suite is available for automatic driver installation, although support for the Mi 4 model in new versions of the program may be limited.The alternative is to install universal Google USB Driver drivers through Windows Device Manager.
- 📁 In mode. MTP You get access to the file system to copy photos and music.
- 🛠 Regime. PTP It is designed to connect digital cameras and work with photos.
- 🌐 Regime. USB-modem allows you to distribute the Internet from phone to computer via cable.
If the system gives an error "Device not recognized", try replacing the cable or port, sometimes helping to reboot both devices with the cable connected.
What if your computer sees your phone as a charger?
Setting up Wi-Fi connections and resolving conflicts
Wireless connectivity is the main way to get online for Xiaomi Mi 4. However, older Wi-Fi modules may not work properly with modern routers using 5 GHz band and wide channels.
In the Wi-Fi settings of the smartphone, go to the advanced settings and make sure that MAC-If the network is hidden, select Add Network and manually enter SSID and type of encryption.
A common problem is the connection cycle, where the phone constantly requests a password or writes “Authentication Error”, in which case the router should temporarily disable the WPS function and change the encryption type to WPA2-PSK (AES), since older versions of Android may not work properly with sleeper security modes.
| Parameter | Recommended value | Note |
|---|---|---|
| Frequency range | 2.4 GHz | Better compatibility with older modules |
| Channel width | 20 MHz | Reduces interference and increases stability |
| Encryption | WPA2-PSK | Optimal balance of safety and speed |
| DNS | 8.8.8.8 (Google) | Accelerates response to provider problems |
Using a smartphone as a USB-modem
Function USB-The modem allows you to use the mobile Internet Xiaomi Mi 4 on a computer where there is no Wi-Fi. This is especially true for older laptops without wireless modules. USB 2.0, but for browsing and working with documents it is quite enough.
To activate the mode, go to Settings → Additionally. → Modem mode. Move the slider «USB-The computer automatically detects a new network connection and will attempt to install drivers.
Make sure that the mobile carrier’s plan includes Internet distribution, as some tariffs may block this feature or require additional payment.
- 📶 Indicator USB-The modem is green when the connection is active.
- 🔋 Modem mode significantly speeds up battery discharge, it is recommended to keep the phone on charge.
- ⚡ The connection speed depends on the quality of the cellular network signal and the class of the cable.
If your computer can’t see the network, check the Windows Device Manager for unknown devices with a yellow exclamation mark, which will indicate the need to manually install RNDIS drivers.
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Use static. IP-address USB-modem, if the computer does not receive the address automatically, this will solve the problem of "No Internet access».
Solving problems with drivers and recognition
The most common difficulty when working with Xiaomi Mi 4 Windows 10/11 — no automatic driver installation: the system may see the device as "Unknown Device" or «QHSUSB_BULK», This requires manual intervention through Device Manager.
You will need to download the Xiaomi USB Drivers package or the universal Google USB Driver package. After unpacking the archive, start the installation or specify the path to the driver folder when you update the device software in the Manager.
In some cases, using the command line to reset the USB service helps. Open the terminal on behalf of the administrator and enter a command to restart the service:
net stop usbservice
net start usbserviceOnce you have completed the command, reconnect the cable. If the device is identified as Android Composite ADB Interface, then the drivers are installed correctly and full access is open.
⚠️ Note: When installing drivers from unverified sources, there is a risk of malicious code being introduced. Use only official resources or verified developer repositories.
Network Restore and Reset Connection Settings
If none of the methods works and the smartphone has forgotten how to connect to networks, you may need to completely reset your network settings. This operation will not affect your personal files, photos or contacts, but will delete the saved Wi-Fi passwords and Bluetooth pairs.
Go to Settings → Additional → Restore and Reset. Select the option “Reset Wi-Fi, Mobile Internet and Bluetooth settings.” Confirm the action and wait for the network modules to reboot.
Once you reboot, try reconnecting, and if the problem persists, it may be a hardware malfunction of the antenna module, which is typical for devices with a long life after falls.
- 🔄 Network reset clears cache DNS and network sockets.
- 🗑 All saved access points and Bluetooth devices are removed.
- 📱 User’s personal data and installed applications are not affected.
In extreme cases, if the software failure is critical, it may be necessary to flash the device through Fastboot, but this requires an unlocked bootloader.
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Resetting network settings is the most effective way to solve software connection errors, which does not require a complete flashing of the device.