The modern smartphone Xiaomi Mi 9 Pro is often the main source of access to the global network for owners of tablets, laptops and other gadgets, especially in the absence of a stationary broadband connection. The modem function in the MIUI shell is implemented quite flexibly, allowing not only to broadcast the signal, but also to fine-tune security parameters, frequency ranges and data consumption limits for connected devices.
In this article, we will discuss in detail all available ways to organize a local network through your smartphone, including the nuances of working with the 5 GHz band, which is especially relevant for the flagship models of the Mi 9 series. You will learn how to properly configure an access point for maximum speed or, conversely, to save battery power, as well as how to protect your channel from unauthorized access by unauthorized persons.
Internet sharing is not just about turning on a single button, it's about setting up security and traffic management protocols that require understanding the basics of wireless networks, and the right configuration will avoid overheating your device over a long period of time, and provide a stable connection for all your devices within range.
Preparation of the smartphone and checking the settings of the mobile network
Before you activate the modem modem, you need to make sure that the basic parameters of cellular communication are configured correctly, as they determine the quality and speed of the future connection. Owners of Xiaomi Mi 9 Pro should pay special attention to choosing the preferred type of network, since for stable distribution, the presence of a 4G or 5G signal is desirable if your operator provides such a service in the current location.
Go to the settings menu and find the section responsible for SIM-It is important to check if the data transfer option is activated, since without it, Internet distribution is technically impossible even if the access point slider is turned on. It is also recommended to manually select the type of network by setting the value "Preferred". LTE» or «5G/LTE/3G/2G (auto” so that the smartphone does not switch to slow communication standards in areas of uncertain reception.
- 📶 Make sure you're on balance. SIM-The card has a sufficient amount of traffic, since the distribution of the Internet through a mobile connection consumes data packets very quickly.
- 🔋 Check the battery level, as active operation of radio modules in the mode of the access point significantly increases power consumption.
- 📡 Make sure the network is available in the coverage area 4G/LTE, Provides the most stable speed for your network customers.
Special attention should be paid to APN settings, which usually come automatically from the operator, but in rare cases may require manual adjustment. If after switching on the Internet on connected devices does not work, although the mobile network is active, the problem may lie in the APN parameters, which can be reset to factory values in the corresponding menu.
⚠️ Before you start giving out the internet, make sure your plan allows you to use your smartphone as a modem, as some operators may block or charge such traffic separately.
It is also important to note that the Xiaomi Mi 9 Pro supports frequency aggregation technology, which allows for high incoming connection speeds that will then be distributed among connected customers. However, it is worth remembering that the speed of the distribution will always be slightly lower than the speed of reception due to the overhead of processing and encryption.
Classic Wi-Fi Access Point Setting
The most popular and convenient way to share the Internet is to create a wireless Wi-Fi network, which can connect to almost any modern device. To start this process on Xiaomi Mi 9 Pro, you need to go to the settings section, select the access point and then activate the switch “Wi-Fi Access Point”. Once turned on, the smartphone will start broadcasting a signal, the network name (SSID) and the default password can be changed in the settings menu.
In the access point configuration menu, you can specify your own network name, which will appear in the list of available connections on other devices. It is recommended to use Latin letters for the name to avoid compatibility problems on older gadgets, although modern versions of Android and MIUI correctly handle Cyrillic characters in SSID.
The key parameter here is the choice of frequency range, as the Xiaomi Mi 9 Pro supports two bands: 2.4 GHz and 5 GHz. The 2.4 GHz range provides more coverage and passes through walls better, but has less bandwidth and is more noisy. The 5 GHz range offers significantly higher data rates, which is ideal for watching high-resolution video, but the signal radius will be smaller.
- 🔐 Set a strong password using a mixed register of letters and numbers to protect the network from brute force hacking.
- 👀 Hide the name of the network (SSID), If you want your device to be visible only to those who know the exact name of the access point.
- ⏱ Set up an automatic shutdown timer so that the access point is turned off in the absence of connected clients, saving charge.
Also available in this section is the function of limiting the number of connected devices, which can be useful to prevent congestion of the channel. You can set a limit, for example, in 4 or 8 devices, after which new attempts to connect will be blocked by the security system of the smartphone.
⚠️ Note: When using the 5GHz band, some older laptops or tablets may simply not see your network, so if compatibility issues are involved, switch to 2.4GHz.
Do not forget that with active operation of the access point, the case of the smartphone can significantly heat up, especially if there is an active data load at the same time. Xiaomi Mi 9 Pro is equipped with an effective cooling system, but when working in a hot room or in the direct sun, it is recommended to remove the protective case to improve heat transfer.
Distribution of the Internet through USB-cable
For laptop and desktop users who require maximum connection stability and minimal delays, wired USB connectivity is the best option, a method that not only provides a more reliable communication channel that is protected from external interference, but also allows you to charge your smartphone at the same time, which is critical for long sessions.
To activate USB-Modem, connect Xiaomi Mi 9 Pro to your computer using a high-quality cable, preferably original or certified, supporting data transfer «USB-The modem" which needs to be switched to the "On" position, the computer automatically recognizes the new network connection and installs the necessary drivers.
☑️ Checking before connection USB-modem
The advantage of the wired method is the absence of radio interference and the inability to intercept the signal by air, which makes it preferable for working with confidential information. In addition, the connection speed in this case is limited only by the bandwidth of the mobile Internet and the USB interface, which on the Xiaomi Mi 9 Pro is represented by version 3.0 Type-C, which provides high data transfer speeds.
- 💻 When connecting to the PC, select the mode of operation USB «File Transfer or Charging Only, the system will prompt you to activate the modem.
- 🔄 If your computer can’t see the network, try changing it. USB-port or cable, as some cables are only for charging purposes.
- 🛡 A wired connection eliminates the risk of neighbor interception, as physical access to the cable is controlled by you.
It is worth noting that when using USB-The modem of battery discharge of the smartphone is practically excluded, since the device receives power from the computer port.This allows you to use the Xiaomi Mi 9 Pro as a permanent network adapter for desktop systems, without worrying about the need to recharge.
Using Bluetooth to distribute a connection
Although this method is considered obsolete due to the relatively low data rate, it can be a lifesaving option in situations where the Wi-Fi module is damaged or a device that does not support other types of networks needs to be connected.
To activate this feature, you must first pair the Xiaomi Mi 9 Pro with a receiving device (laptop, tablet or other phone). After successfully pairing the access point and modem menu, activate the “Bluetooth modem” switch. On the receiving device, select your smartphone from the list of Bluetooth devices and initiate an Internet connection.
Connection speeds via a Bluetooth modem rarely exceed 1-2 Mbps, which is enough for text messaging, emailing or navigation, but not enough for streaming video or downloading heavy files. However, for emergency cases when you need to urgently send a document or access an online bank, this method is quite applicable.
- 🔗 The pairing process requires code confirmation on both devices to ensure connection security.
- 🐢 The data transfer speed is limited by Bluetooth protocol and is significantly lower than Wi-Fi or other wireless devices. USB.
- 🔋 This method is the most energy efficient among all the options for distributing the Internet.
Why is Bluetooth slower than Wi-Fi?
Therefore, this method should be considered only as a backup option.
Connected Device Management and Security
The security of your personal hotspot is a priority, as it passes all your Internet traffic, including potentially sensitive data. Xiaomi Mi 9 Pro owners have the ability to track the list of connected devices in real time, see them. MAC-address and, if necessary, block access to unwanted users.
The access point control menu shows the number of active customers. If you notice a device you don't know, you should immediately change the Wi-Fi password of the network. The MIUI system also allows you to set the maximum number of connections, which will prevent a large number of users from overloading the channel, even if they know the password.
| Parameter | Recommended value | Impact on work |
|---|---|---|
| Type of encryption | WPA2 PSK / WPA3 | Maximum protection of data from interception |
| Frequency range | 5 GHz | High speed, less interference |
| Device limit | 3-5 pcs. | Speed stability for each customer |
| Timer of shutdown | 5-10 minutes | Savings in battery charge |
For additional protection, you can use the Blacklist function, which is entered MAC-Device addresses that are permanently denied access to the network, even when you have the right password, which is useful if you have previously shared a password with someone but no longer want to give that particular user access.
⚠️ Warning: Never leave your access point open (without a password), as attackers can not only steal your traffic, but also access data from the devices being transferred.
Regularly checking the list of connected devices helps to control traffic consumption. If you notice that Internet speed has dropped sharply and traffic limits are running out faster than usual, check if someone else has connected to your network.
Optimizing battery consumption and traffic
Internet distribution is one of the most energy-intensive processes for a smartphone, capable of quickly discharging even the capacious Xiaomi Mi 9 Pro battery. To minimize energy loss, it is recommended to reduce the brightness of the screen, turn off background applications and use energy saving mode, if it does not conflict with the modem.
MIUI provides tools to monitor traffic flow directly in the hotspot settings. You can set a data limit, after which the distribution of the Internet will automatically stop, and this is especially true for the limited package of gigabytes, avoiding unexpected financial costs.
💡
Use a dark theme and reduce the time before the screen is turned off to reduce power consumption during the distribution of the Internet.
Also, consider that operating in the 5GHz band consumes more power than 2.4GHz. If high speed is not critical, switching to 2.4GHz will help extend the battery life of the smartphone. In addition, turning off the visibility of the SSID (hiding the network name) also reduces power consumption slightly, since the smartphone does not need to constantly broadcast packets with the network name.
- 📉 Set a traffic limit in the settings to automatically disable the access point when you reach a threshold.
- 🌡 Watch the temperature of the case; with strong heating, the system can artificially reduce the data transfer rate.
- 🔌 For long-term work, it is desirable to keep the smartphone on charge or use Power Bank.
Optimization also involves closing heavy apps on the smartphone itself while it’s in modem modem mode.Fame syncing photos, updating apps and streaming music on the phone itself will share a channel with connected customers, reducing overall performance.
💡
Competent setting of limits and choosing the right frequency range allow you to balance between the speed of operation and the autonomy time of the smartphone.