Modern smartphones from Xiaomi are equipped with advanced wireless modules that can operate in high-speed frequency range. Many users, buying a new gadget or changing a router, face the need to manually activate support for the fifth generation of Wi-Fi. This is not just a marketing ploy, but a real technical need for stable operation in conditions of high noise of the air. Unlike the standard range 2.4 GHz, which is often overloaded with neighboring routers and household appliances, 5 GHz provides significantly higher bandwidth and lower latency.
However, automatic switching between bands does not always work correctly, especially if the router broadcasts one common network (Smart Connect).In such cases, the phone can “cling” to a longer-range, but slower 2.4 GHz signal, ignoring high-speed 5G. To correct this situation and make the device work at maximum speed, you need to make changes to the settings of the engineering menu or the parameters of the WiFi assistant. Next, we will discuss in detail all available activation methods and possible obstacles.
Differences in the 2.4 GHz and 5 GHz ranges in Xiaomi smartphones
Understanding the physical frequency difference helps to set the device up properly. The 2.4 GHz range is characterized by greater range and the ability to skirt obstacles such as walls or furniture. However, its bandwidth is limited, and the air itself is usually full of Bluetooth signals, microwave ovens and routers of neighbors, which leads to unstable connection and a drop in real speed.
On the other hand, 5GHz offers broad data channels and is virtually free of interference in apartment buildings. Redmi and POCO smartphones with Wi-Fi 5 (ac) and Wi-Fi 6 (ax) standards can achieve huge speeds in this range, but it has a drawback: the signal penetrates the capital walls worse and fades faster at a distance.
It is important to note that not all models of phones support work in the 5 GHz band. Budget devices of previous years can be equipped with a module that operates exclusively at 2.4 GHz. In this case, software activation through the settings will not give a result, since the hardware does not support this technology. You can check the specifications of your device on the official website of the manufacturer or in the box from under the smartphone.
⚠️ Note: If your router is configured to “Smart Connect” (combining 2.4 and 5 GHz into one network), the phone can independently and uncontrollably switch between frequencies, choosing one where the signal is stronger, not faster.
Checking support for 5G phone module
Before you start to make complex adjustments, you need to make sure that your device is physically able to receive high-frequency signal. In most modern Xiaomi models, this feature is enabled by default, but in the case of assemblies for some regions or custom firmware, there may be restrictions. The easiest way is to see the list of available networks.
If you see a network with a 5G or a separate name that distributes your router at a high frequency, but the phone does not see it, then the problem is the settings. It is also worth considering that some carriers and router manufacturers use the 802.11ac or 802.11ax standard, which only work in the 5 GHz band.
For accurate diagnostics, you can use special applications from the Google Play store, such as WiFi Analyzer, which show not only the name of the network, but also the frequency at which it operates. If there are no networks on the list with a frequency of 5000 MHz or higher, it is possible that the smartphone module is running in limited mode or the drivers are not working correctly.
Below is a table of compatibility of popular series of devices with different wireless standards:
| Series of devices | Support for 5 GHz | Maximum Wi-Fi standard | Features |
|---|---|---|---|
| Xiaomi Mi/Xiaomi (Flagships) | Yes. | Wi-Fi 6 / 6E | Full support for all channels |
| Redmi Note (Average Budget) | Yes (mostly) | Wi-Fi 5 (ac) | There may be restrictions on the width of the channel. |
| Redmi (Budget Segment) | Partially. | Wi-Fi 4/5 | In older models, only 2.4 GHz |
| POCO (Game Models) | Yes. | Wi-Fi 6 | Optimized for low ping |
Configure through the CIT Engineering Menu
The most effective way to get a phone to see and use 5G networks is to change regional settings through the CIT engineering menu. Often, smartphones designed for the Chinese market or certain regions have software restrictions on using certain frequency channels allowed in other countries.
To enter the diagnostics menu, you need to open the standard Phone app and type a special code. The interface will change, and you will see a list of all available hardware tests. We are interested in the section related to wireless modules.
##6484##Once you enter the code, you will open a testing menu. You will need to find a item that can be called Wireless, WiFi or Connectivity. Within this section, often hidden setting Country Code or Region. Changing the region to "United States" or "Russia" often removes the restrictions on 5 GHz channels that can be blocked for other countries.
☑️ Checking before entering CIT
Be careful when changing the settings in the engineering menu. Incorrect setting of the region can cause the phone to stop seeing some local networks or, conversely, will start catching forbidden frequencies, which will cause conflicts with the equipment.
⚠️ Warning: Changing the region in the engineering menu can affect the work NFC Bluetooth, as these modules also have frequency restrictions in different countries.
Use WiFi Assistant and additional settings
In the MIUI shell and the new HyperOS, there is a built-in connectivity optimization tool that is designed to automatically select the best network, but sometimes its algorithms work too aggressively, preferring the stability of 2.4 GHz speeds of 5 GHz. Disabling some features can force the phone to hold on to high-speed range.
Go to your Wi-Fi settings and find “WiFi Assistant” or “Wi-Fi Assistant” and turn off Auto Switch or “Select the Best Network Automatically,” which will allow you to manually connect to and stay on a 5GHz network even if the 2.4GHz signal gets a little more powerful.
Also in advanced Wi-Fi settings (often hidden in the “Advanced” menu or called by a triple tap on the firmware version) can be a Use 5GHz priority switch (Priority 5 GHz), activating this option gives a clear command to the communication module to look for high-frequency access points first.
What to do if the settings are hidden?
Another important factor is the use of static IP-Sometimes dynamically getting an address (DHCP) In mixed networks, the router assigns the phone parameters that are more appropriate for the old standard. IP manually, you fix the connection parameters.
Solving the visibility problems of 5G network
The situation where a router distributes a 5G network, but a Xiaomi phone just doesn't show it on the list of available, is quite common. This may be due to the width of the channel. Many routers default to using 80 MHz channel width or even 160 MHz for maximum speed. Old or budget Wi-Fi modules in phones may not "see" channels this width.
To solve the problem, you need to enter the router settings (usually through the browser at 192.168.0.1 or 192.168.1.1). In the 5 GHz wireless network section, try changing the channel width from "Auto" or "160 MHz" to a fixed 20 MHz or 40 MHz. Once you save the settings, the router will restart, and the network should become visible to the smartphone.
Also worth checking is the channel number. In the 5GHz band, there are channels that are not supported in some regions (for example, channels above 140). If the router is on channel 165 and the phone is configured to a region where this channel is prohibited, there will be no connection. Setting a channel in the 36-48 or 149-161 range usually solves the compatibility problem.
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Use Xiaomi’s Mi WiFi app to quickly configure Mi and Redmi routers, which makes it easy to change frequencies and channels without logging into the web interface via a computer.
If nothing works, try forgetting the network on your phone and re-entering your password. Sometimes cached security type or encryption protocol (WPA2/WPA3) data interferes with a proper high-frequency handshake.
The Impact of Firmware and Region on Wi-Fi
The software plays a key role in managing the communications module, and Global ROMs often have stricter limits on radiation and frequency than China ROMs, which are related to certification requirements in different countries.
If you've been refashioning your phone or bought a Chinese firmware device and installed a global one, there could be a driver conflict, and in some cases, resetting your network settings to factory settings helps, and it won't delete your photos or contacts, but it will clear all the stored Wi-Fi passwords and Bluetooth settings.
To perform the reset, go to Settings -> Connection and Sharing -> Reset Wi-Fi, mobile networks and Bluetooth. After this operation, the phone will search for networks "from scratch", which often helps to detect previously hidden 5 GHz bands.
⚠️ Note: When you reset your network settings, you will lose all saved Wi-Fi passwords. Make sure you remember the password from your home network before performing this procedure.
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Changing the region in the engineering menu and resetting the network settings are two of the most effective ways to make a phone see hidden 5G networks if hardware support is present.