How to use Xiaomi as a modem: USB, Wi-Fi and Bluetooth

Situations when the fixed Internet refuses or is not at all can be taken by surprise, but modern smartphones allow you to instantly solve the problem of access to the global network. Using a Xiaomi device as a modem is a proven way to distribute the Internet to a laptop, tablet or other gadget without having to search for open Wi-Fi networks. MIUI HyperOS provides flexible tools for organizing such a connection through the USB-cable, Bluetooth or creating a wireless access point.

The main advantage of this method is the stability of the connection and the ability to use high-speed mobile traffic where there is no wired infrastructure. USB-The modem not only provides data transfer, but also charges the phone at the same time, which is critical for long sessions. However, to turn a smartphone into a full-fledged network device, you need to properly configure network settings and make sure that there are active drivers on the connected computer.

In this article, we will discuss in detail all available methods of distributing the Internet, paying special attention to the nuances of setting up USB-The mode, as it often raises questions among users due to the lack of automatic driver installation in Windows operating systems, you will learn how to optimize power consumption, what hidden settings can help with speed problems, and why the mode USB-Modem always prioritizes Wi-Fi access points in terms of ping stability in online games and video conferencing.

Advantages USB-modem before Wi-Fi access point

The way you distribute the Internet often depends on the specific tasks you're solving at the moment, and if you want maximum speed and minimum latency, then a cable connection is unmatched, USB-Connection eliminates data packet losses caused by radio interference or room walls, providing a direct digital communication channel between the smartphone and the computer.

Another important aspect is energy efficiency. When operating in Wi-Fi mode, the smartphone consumes battery power extremely intensively, since the radio module runs at high power to cover the signal area. USB-a computer port that turns the phone into a stationary network adapter without the risk of discharging at the most inopportune moment.

⚠️ Attention: With prolonged use USB-The modem makes sure the cable is in good working order and has no inflections. Cheap "charging only" cables may not transmit data, which will lead to a connection error, although the phone will show charging.

In addition, wired connections are harder to expose to external interception or “evil twin” attacks, which are possible in public places using open Wi-Fi networks. For corporate environments or working with sensitive data, physical cable remains the gold standard of security, eliminating the possibility of remote scanning of smartphone ports by attackers.

Preparation of the smartphone and checking network settings

Before you activate the modem modem, you need to make sure that the smartphone itself has a stable connection to the network of the operator. Often users try to distribute a weak 3G signal or unstable 4G, surprised by the low speed on the computer. Check the indicator in the notification curtain: for comfortable work, the presence of 4G, 4G+ or 5G characters is desirable.

An important step is to check the balance and tariff plan. Many operators share traffic packets for smartphones and for distribution to other devices (tethering). If your tariff does not include unlimited distribution or has restrictions, the operator can artificially lower the speed or block the connection. It is recommended to check the conditions with the provider in advance or activate the corresponding option in your personal account.

You should also pay attention to the mobile network settings in the device menu. → SIM-maps and mobile networks → Preferred network type and select the mode with the maximum available speed, for example, Preferred 5G or 4G/LTE. Sometimes, automatic network selection can get stuck on an older communication standard, which will significantly reduce the performance of your improvised router.

Instructions: how to turn on USB-modem

The process of activating a wired modem in shells MIUI HyperOS is simple enough, but requires consistent steps. First, connect your smartphone to your computer using high-quality hardware. USB-Once connected, the Android system can suggest you to choose the mode of operation. USB (only charging, transfer of files, MIDI); This choice is not critical for the modem, since the network interface is activated separately.

Then you need to go to the settings menu. Open the settings. → Connection and Sharing (in older versions) MIUI The path may be different: additional → Modem and access point. In the list that opens, you'll see a switch. USB-If it's active (blue), it means the computer must already identify the new network device.

When you turn on, you may have a system warning that the Wi-Fi hotspot will be disabled, which is standard behavior, because the radio module cannot simultaneously operate in client mode (give away your Internet) and access points on the same frequency without special hardware solutions.

If the computer is not responsive to the connection, you may need to manually install drivers. In modern versions of Windows 10 and 11, RNDIS (Remote Network Driver Interface Specification) drivers are installed automatically. However, if an unknown device appears in the Device Manager, you may need to install ADB drivers or specialized Xiaomi USB Driver drivers from the official website.

Wi-Fi access point settings and security settings

Wireless distribution remains the most popular method due to its versatility and lack of cables. To set up an access point on Xiaomi, go to Settings menu → Connection and Sharing → Wi-Fi Access Point. Here you can not only enable the feature, but also customize its parameters in detail for security and stability.

First, change the standard network name (SSID), which usually contains a phone model, to a unique name that makes it easy for you to recognize your network in the list of available connections. Then set a strong password using a mixed register of letters and numbers. The type of encryption must be set to WPA2-Personal or WPA3-Personal to prevent unauthorized access.

If your devices support 5GHz, it is preferable to use this range, as it is less crowded with neighbor routers and Bluetooth headsets. However, if you need to connect old gadgets or increase the distance to the client, switch to 2.4GHz.

Using Bluetooth modem to save energy

Although the Bluetooth modem is significantly inferior in speed to USB and Wi-Fi analogues, it remains relevant in situations where you need to transfer small amounts of text information or mail, and the battery charge of the smartphone is critically low. The data transfer speed over the Bluetooth PAN (Personal Area Network) protocol rarely exceeds 1-2 Mbps, which is not enough for video, but quite enough for instant messengers.

To activate this mode, you must first pair the smartphone with a computer or other device via Bluetooth. After successful (pairing) on the phone in the Connection and Sharing menu, you need to activate the Bluetooth modem switch. On the computer side in the settings of Bluetooth devices, select the connected phone and click "Connect through" →"Access Point (Access Point).

The main advantage of this method is minimal power consumption: a Bluetooth radio module consumes several times less power than a Wi-Fi module, which allows you to extend the life of a smartphone in emergency situations. In addition, the Bluetooth connection is more resistant to interruptions when driving, although it has a very short range, usually not exceeding 10 meters of line of sight.

Problem Solving: Drivers, Errors and Limitations

The most common problem with using Xiaomi as a modem on Windows is the lack of Internet with a formally working connection, often due to a conflict of interface metrics: the computer tries to log on to the network through the main adapter, ignoring the Internet. USB-In this case, you can temporarily disable the main network adapter or change the priority of connections in the settings. TCP/IP.

Another common reason is carrier lockdown, and providers determine the type of device by the value of the field. TTL (Time to Live. Android is the default TTL equal 64, and — 128. Operator sees jump TTL And it blocks distribution. You can change the way you circumvent this restriction on root-enabled smartphones. TTL system-file /proc/sys/net/ipv4/ip_default_ttl, fixation 65 (for Windows or 63 (for macOS/Linux).

⚠️ Note: Modifying system files (TTL) requires a superuser (Root) right and may result in network instability or loss of warranty.

Users may also be faced with a situation where USB-The computer port doesn't provide enough current to run the modem and charge at the same time, especially on older PCs, in which case the system can permanently reconnect the device. USB-externally powered hub or power-saving shutdown USB-port BIOS/UEFI computer.

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If the speed is USB-Low modem, try to switch port USB 3.0 (blue) to port USB 2.0 (black) or vice versa. USB 3.0 interferes with Wi-Fi and Bluetooth modules inside the smartphone, degrading the signal quality.

Remember that when you use your smartphone in modem mode, you heat it up. The processor and radios are loaded, converting the signal, and you should remove the protective case during long sessions, and not put the phone on soft surfaces that interfere with heat transfer.

Frequently Asked Questions (FAQ)

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Using a Xiaomi smartphone as a modem is a versatile solution, but for constant operation it is better to purchase a dedicated 4G/5G router that will provide better stability, signal range and will not waste battery life of your main phone.