Modern smartphones series Redmi from the company Xiaomi have long ceased to be just devices for making calls, turning into full-fledged control centers for the digital world. One of the most popular functions in the user’s arsenal is the ability to distribute the Internet when a landline Wi-Fi is unavailable or is unstable. Activating the modem mode allows you to instantly turn your gadget into an access point for a laptop, tablet or other phone, providing continuous surfing on the Internet.
The setup process may seem trivial, but the shell MIUI or new HyperOS hidden many subtleties that affect the connection speed and stability. Incorrect frequency configuration or ignoring security settings can result in connected devices not seeing the network or losing signal every few minutes. In this material, we will analyze in detail all aspects of enabling modem mode, from basic steps to advanced energy saving settings.
You will learn how to optimize traffic distribution so that the smartphone battery does not drain in an hour, and what parameters should be changed for maximum data transfer speed. We will also address security issues so that your personal data does not fall prey to attackers in public places. Are you ready to turn your Redmi into a powerful tool for work and play? Let's get started.
Basic setup of a Wi-Fi access point
The most common way to distribute the Internet is to create a wireless access point. First, you need to go to the appropriate section of your device’s settings menu. The path may differ slightly depending on the firmware version, but the logic remains the same for all models in the line Redmi. Go to the main menu and select the item Settings, then go to the section Connection and sharing.
In the list that opens you need to find the item Wi-Fi access point. By clicking on it, you will see a switch, which by default is in the Off position. Activate it by moving the slider to the right. The system will automatically create a network with a name that matches your model name and protect it with a password. However, you should not rely on standard settings, as they are not always optimal.
Pay attention to the field SSID (network name). You can change it to any name convenient for you to easily identify your access point among neighboring signals. Below is a field for entering a password. Make sure it is at least 8 characters long and includes mixed case letters as well as numbers. This is critical to protect your mobile traffic mobile traffic from unauthorized use
⚠️ Attention: Do not use simple passwords like "12345678" or date of birth. In the overloaded air of an apartment building, such a network can be hacked in a matter of minutes, which will lead to a rapid consumption of your packet traffic.
After entering all the data, do not forget to press the button Save at the top of the screen. Your smartphone is now broadcasting a signal and other devices can connect to it. If you plan to use this function often, it makes sense to place the access point shortcut on your desktop for quick access.
☑️ Check before turning on the access point
Selecting a frequency range and security standards
Deep configuration of the access point can significantly influence the quality of the connection. In the Wi-Fi configuration menu, find the item Frequency range. By default, many smartphones operate in the 2.4 GHz band, which provides good coverage and wall penetration, but has limited speed and is susceptible to interference from neighboring routers and Bluetooth devices.
If your connected devices support the modern standard, switch the mode to 5.0 GHz. This will give a significant increase in speed, which is especially important when watching high-definition videos or playing online games. However, it is worth remembering that the signal at this frequency passes through obstacles less well, so the devices must be in line of sight or in the next room.
Another important parameter is the security protocol. In the list of available options you will see WPA2 PSK and possibly WPA3 on new models. Always choose the most advanced option available as it provides the best data encryption. Outdated protocols like WEP or open networks without a password make your phone vulnerable to traffic interception.
| Parameter | Value 2.4 GHz | Value 5.0 GHz |
|---|---|---|
| Maximum speed | Up to 150 Mbit/s | Up to 866 Mbit/s |
| Range | High (up to 50 m) | Medium (up to 20 m) |
| Wall penetration | Excellent | Low |
| Interference level | High | Low |
Also in the advanced settings you can find the option Maximum number of connections. Limit this number to 3-5 devices. This will prevent a situation where dozens of gadgets try to connect to your access point, which will inevitably lead to a drop in speed and overheating of the smartphone processor.
If you distribute the Internet to only one laptop, force select the 5.0 GHz band - this will reduce the influence of interference from neighboring networks and ensure stable ping in games.
USB modem mode for a stable connection
When the wireless connection is unstable or maximum speed without loss on the radio channel is required, a wired connection comes to the rescue. Mode USB modem allows you to broadcast the Internet from your phone to your computer via a cable, while simultaneously charging the device. This is an ideal option for stationary work in conditions of poor Wi-Fi signal reception.
To activate this function, first connect your smartphone to your computer using a high-quality USB cable. Make sure the cable supports data transfer and not just charging, as cheap analogues often lack internal lines for transferring information. After the physical connection, go to the menu Connection and sharing.
Find the item USB modem and activate the switch. If the item is grayed out, check the USB settings in the developer menu or try a different port on your computer. The system will automatically install the necessary drivers, and after a few seconds a new network connection will appear on the PC.
⚠️ Attention: When using a USB modem on a computer running Windows operating system, additional drivers may be required. Usually they are installed automatically, but in rare cases they need to be downloaded from the manufacturer’s official website.
The advantage of this method is the absence of electromagnetic radiation near the head and higher energy efficiency. The phone does not waste energy on the operation of a powerful Wi-Fi module, but receives power from the computer port. This allows you to use the modem mode for an almost unlimited time without the risk of quickly draining the battery.
Why does the computer not see the USB modem?
Most often the problem lies in the cable. Try replacing the cord with an original or certified analogue. Also check if USB debugging is enabled in the developer menu, although this is usually not required for the modem. Sometimes switching the USB operating mode from “Charging only” to “File transfer” and back helps.
Optimizing power consumption and overheating
Modem mode, especially in the 5 GHz range, creates a serious load on the radio module and processor of the smartphone. This inevitably leads to increased energy consumption and heat generation. If you are planning a long Internet distribution session, you need to take measures to maintain the functionality of the device.
The access point settings often contain a function Sleep timer. Set it for 10 or 30 minutes. This is a useful option that will automatically turn off the access point if no one has connected to it for a specified time. This will save your charge if you forget to turn off the modem after use.
Monitor the case temperature. If your smartphone becomes noticeably hot, lower the screen brightness or turn off the display altogether. In severe cases, it is recommended to remove the protective cover to improve heat dissipation. Overheating can lead to throttling - an artificial decrease in processor performance, which will worsen Internet speed.
- 🔋 Disable background applications that actively use the network to reduce the load on the modem.
- 🌡️ Do not leave the phone in direct sunlight while distributing the Internet.
- 📉 Use the power saving mode, but make sure that it does not limit the operation of network interfaces.
Some users note that when actively distributing traffic, the battery quickly drains. This is normal. If possible, keep the phone connected to an external battery (Power Bank) or network charger, but make sure that the device does not overheat from simultaneous charging and distribution.
Traffic limits and connection control
mobile data is rarely unlimited, so controlling data consumption when working in modem mode becomes a task of paramount importance. The access point settings on Redmi have built-in tools for monitoring and limiting traffic consumption of connected devices.
Find the section Traffic limit or One-time limit. Here you can set a data limit, after which the access point will automatically turn off. This is reliable insurance against situations when one of the connected users starts downloading heavy files or updating games, unnoticed by you using up the entire monthly package.
Also in the menu Connected devices you can see a list of everyone gadgets that are currently using your Internet. If you find an unfamiliar device, change the access point password immediately. The system also allows you to block specific MAC addresses by adding them to a blacklist, without changing the general password for everyone.
Remember that telecom operators can monitor the type of traffic. Some tariff plans prohibit sharing the Internet to other devices (tethering). In such cases, using modem mode may result in additional charges or blocking of the service. Always check the terms of your tariff.
⚠️ Attention: Telecom operators often update tariff conditions. What worked yesterday may not work today. Check the current information in your operator's personal account before a long distribution session.
Setting a traffic limit is the only reliable way to protect your budget from unexpected charges when using an access point in public places.
Solving common connection problems
Despite the stability of the system Android and shell MIUI, users sometimes encounter difficulties when enabling modem mode. problem - devices do not see the network or cannot connect, despite the correct password. Most often, this can be solved by simply rebooting the network module.
Try turning airplane mode on and off. This action will restart all radio interfaces of the smartphone, including cellular and Wi-Fi. If the problem persists, check whether the "Traffic Saving" function is activated in the main settings, which may block background data transfer for the access point.
Another common situation is that there is a connection, but the Internet does not work. Make sure that the mobile data on the smartphone itself is active and working correctly. Open any page in your phone's browser. If the pages do not load on the device itself, the problem is on the operator’s side or in the APN (access point) settings.
- 🔄 Restart your smartphone - this solves 90% of software network failures.
- 📡 Check the APN settings in the mobile networks menu, resetting them to default values.
- 🔌 When using a USB modem, try another USB port on your computer.
If all else fails, the conflict may be caused by a third-party application that controls the network (antivirus, firewall, VPN). Try temporarily disabling them and checking the operation of the modem. As a last resort, resetting the network settings will help, but remember that this will delete all saved Wi-Fi passwords and Bluetooth pairs.
What to do if the upload speed is very low?
Check the signal strength of the cellular network. If you have 1-2 divisions, high speed is physically impossible. Also make sure that there are not too many devices connected to the access point sharing the channel with each other. Try changing the Wi-Fi channel in the advanced settings of the access point.
Why is the USB modem button inactive (gray)?
This means that the phone does not see the physical connection to the computer. Check the cable, USB port on your PC and make sure your phone screen is unlocked. Sometimes you need to confirm permission to access data in a pop-up window on the smartphone screen.
Is it possible to distribute the Internet if the balance is negative?
No, modem mode uses mobile data. If you do not have available funds or traffic packages, the connection will not be established. Some operators allow a slight minus, but this depends on the specific conditions of the tariff.
Does modem mode affect battery life?
Yes, active operation of the radio module in access point mode accelerates battery wear due to heating and high discharge currents. It is recommended not to keep the phone in this mode 24/7 unless necessary.
How to hide your network name (SSID)?
In the advanced settings of the access point there is an option "Hide network". If you enable it, the network will not appear in the list of available ones. To connect, you will have to manually enter the network name on the receiving device.
Why does the laptop connect, but says “No Internet access”?
Check the DNS settings on the laptop. Try registering public DNS (for example, 8.8.8.8). Also make sure that VPN is not enabled on your phone, which can block the distribution of traffic to other devices.