How to use Xiaomi as a modem for a computer via USB: a complete guide

In situations where wired Internet is not available or Wi-Fi signal is unstable, the smartphone becomes the only salvation for access to the network. USB-The modem is the most reliable way to distribute traffic, providing minimal latency and stable connection compared to Bluetooth or a wireless access point. Owners of Xiaomi devices often underestimate the potential of their gadget, using it only for calls or instant messengers.

Using the phone as a network adapter not only allows you to access the Internet, but also save battery power, as the device charges while running through the cable. This is especially true for laptops with a dead battery, with every watt of energy counting. However, the setup process may face the absence of drivers or specific settings of the Windows operating system.

In this guide, we’ll take a look at how your Redmi or Poco can become a full-fledged network interface, and we’ll look at both standard activation methods and hidden settings that may be required to work properly on corporate networks or when using older versions of Windows. For work. USB-modem must have an active tariff with mobile Internet enabled, as Wi-Fi from another device to distribute through USB-cables cannot be used by standard means.

Advantages of a wired connection over a Wi-Fi access point

Many users are in the habit of enabling wireless access point mode even when they're near a computer, which is convenient but inefficient in terms of performance and power consumption. USB-cable provides direct data transmission without losses typical for the radio channel.

The main advantage is the stability of ping, which is critical for online gamers and those who work with VoIP telephony or video conferencing. wireless signal is subject to interference from neighboring routers, microwave ovens and even Bluetooth devices, while cable completely eliminates external interference.

Also, when using Tethering mode via cable, the smartphone does not overheat. The Wi-Fi distribution makes the radio module run at its limits, which often leads to the processor trottling and lowering the Internet speed, while the cable takes over the power function, allowing the phone to work in a gentle mode.

  • 📉 Ping: Direct connection minimizes server response time.
  • 🔋 Energy efficiency: The phone is charged while running, not discharged.
  • 🛡️ Data security: Physical access to cable is harder to intercept than radio signal.
  • ⚡ Transmission speed: No packet loss due to airborne interference.

⚠️ Note: When using the mobile Internet, monitor traffic consumption. Computer programs and the operating system can automatically start downloading major updates without knowing that you are using a limited mobile tariff.

📊 What type of internet connection do you use most on PC?
Wireless Ethernet
Wi-Fi router
USB-phone modem
Mobile hotspot (Wi-Fi)
Other

Preparation of a smartphone and cable for connection

Before you start setting up, you need to make sure that the physical connection is in good condition. Not all USB cables are suitable for data transfer; many cheap ones are designed solely for charging and do not have the appropriate internal contacts. Use the original cable from the kit or a certified accessory with support for high-speed data transfer.

It is also worth checking the status. SIM-Make sure that the balance is available and the mobile network settings include data transfer. In some cases, especially when using corporate SIM cards, the operator can block the distribution of the Internet, so it is better to check the tariff conditions with the provider in advance.

An important step is to unlock the screen of the smartphone when you first connect. The MIUI or HyperOS security system can request permission to access the device data when you connect to a new PC. Ignoring this request will lead the computer to see the phone only as a drive or charger.

☑️ Connection readiness

Done: 0 / 5

Step-by-step activation instruction USB-Xiaomi modem

The process of turning on the modem in the MIUI shell is standardized, but item names may vary slightly depending on the version of Android. First connect the smartphone to the computer with a cable. Wait for the system to identify the device and install the basic drivers.

Then go to the settings menu. The path is usually as follows: Settings. → Connection and Sharing (or "Additional Features" in older versions «USB-modem" and activate the switch. If the item is inactive (gray), check the cable connection and the availability of a mobile network.

Once turned on, the computer must make a sound of connecting new hardware. In the tray (notification area), the monitor or network card icon will appear. Windows automatically adjusts network settings, assigns IP-The address will set the default gateway. 10-15 seconds.

The path in the activation menu:


Settings → Connection and Sharing → USB- Modem

What to do if the item USB-modem's not on the menu?
If you don't find a point USB-Modem, try connecting the phone to another USB-Sometimes the system hides the option until a physical connection is detected. Also check if flight mode is on.Install drivers and solve recognition problems Windows 10 and 11 usually automatically finds the necessary drivers through the update center. However, Xiaomi devices sometimes require manual installation of components. ADB Or specific Android drivers, especially if you're using Windows 7 or older builds. If your computer only responds to the connection with a charge, open Device Manager. Find a device with a yellow exclamation point or in the Other Devices section. Right-click, select “Update driver» → «Auto Search. If that doesn't work, download Google's universal driver. USB Driver or Mi PC Suite. In rare cases, it helps to switch the mode of operation. USB. Go to the developer menu (you need to click on the build number 7 times in About Phone) and find the Configuration item. USB default. Select mode. MTP or PTP, Connect the phone, and then try to activate the modem again. Problem Possible reason Method of solution Computer can't see the phone Faulty cable Replace the cable with quality with data support USB-modem gray No network or SIM Check it out. SIM-The Internet is available but not working. DNS prescribe DNS 8.8.8.8. in the adapter properties Low speed USB 2.0 Port Use port Use port USB 3.0 (blue) Network setup and PC speed optimization After a successful connection, it is important to properly configure the network connection in Windows to avoid unnecessary traffic consumption. The operating system may default to a new connection as "Public," which limits the device's visibility on the network but allows background updates. Go to network settings, select your Ethernet connection (which is now your phone), and turn on the Limit Connection Toggle, which will prevent Windows from downloading large updates and syncing cloud storage without your knowledge. DNS-Standard service providers DNS They can work slowly. TCP/IPv4 You can write down Google addresses (8.8.8.8) or Cloudflare (1.1.1.1), This often speeds up page opening and solves access problems for some resources. ⚠️ Note: Do not turn off the device abruptly during data transfer. Although the smartphone file system is protected, abrupt breakup of the connection can cause the Windows network stack to freeze, and you will have to restart the computer to restore it. 💡Setting up a “Limit Connection” mode on Windows is a critical step that will save your mobile traffic from being “eaten” by system processes. Frequently Asked Questions (FAQ) Is it possible to distribute Wi-Fi from a computer that receives Internet from Xiaomi through the Internet? USB? Yes, it's possible. It's called a bridge, or Internet Connection Sharing (ICS). In connection properties USB-The modem in the Access tab should allow other network users to use this connection by selecting your Wi-Fi adapter. NAT, What can slow down the speed? Why is the speed through USB-The modem is lower than directly on the phone? Speed may be limited by capacity USB-It's also affected by the loading of the phone's processor with background tasks. Try closing heavy apps on your smartphone. Does this method work on macOS and Linux? MacOS support. USB-Android modems are limited and often require additional drivers (e.g., HoRNDus). Linux (Ubuntu, Fedora) supports are built into the kernel and usually work immediately after you connect, defined as a network interface. USB-- In modem modem? USB-The modem phone warms much less than when the Wi-Fi access point, as the radio module operates in an economical mode, and excess heat is removed through the metal cable case and dissipated. But when you charge and you're actively transmitting data, light heating at the bottom of the case is normal. How do you turn off modem modem? USB-If you want to turn off software, go back to the Settings menu. → Connect and share and turn off the switch «USB-Modem. It also helps to turn on and off flight mode.