Xiaomi smartphone owners often struggle to understand the frequency range of their wireless connection. Data transfer speed and signal stability directly depend on whether you're using the crowded 2.4 GHz band or the faster, more modern 5 GHz standard. In the ecosystem Miui And HyperOS Information about the current connection may be hidden from the average user, making it difficult to diagnose internet problems.
Determining the operating frequency is especially important when setting up a smart home, as many IoT devices don't detect 5 GHz networks, or, conversely, when you need to ensure maximum speed for streaming and gaming. Understanding the differences between standards allows you to properly configure your router and avoid channel conflicts, which often occur in multi-apartment buildings. In this article, we'll take a detailed look at all the available methods for checking the frequency on devices. Redmi And Poco.
⚠️ Note: The settings menu interface may differ slightly depending on the MIUI version (12, 13, 14) or the new HyperOS. The layout of the options sometimes changes after major system updates.
Visual inspection via the standard settings menu
The easiest way to find out your current frequency is to look in the standard Android settings menu. On most modern smartphones Xiaomi This information is displayed directly in the active connection card. You don't need to install additional applications or have superuser rights.
To get started, open Settings and go to the section Wi-FiClick the arrow next to the name of the network you're currently connected to. In the window that opens, find the "Frequency" or "Band" field. If it says 5 GHz, you're using the high-speed band; if 2.4 GHz, it's the standard band.
However, on some firmware versions, this information may be hidden or replaced with a general speed indicator. In this case, the system may only display the link speed (e.g., 866 Mbps), which indirectly indicates the range but doesn't provide a definitive answer. Link speed above 433 Mbps almost always means operating in the 5 GHz band.
Using the engineering menu for accurate diagnostics
For users seeking more detailed technical data, there's access to the engineering menu. This hidden interface provides real-time access to modem and radio module logs. It displays not only the frequency but also the signal level in dBm, channel width, and other parameters.
To access the menu, open the application Telephone and enter the special code ##6484##If the code doesn't work, your shell version may be blocking this access, and you'll have to use third-party methods. In the menu that opens CIT find the item related to Wireless or WiFi.
In the test menu, select the WiFi test. You'll see technical information, including the channel. Channels 36 to 165 are in the 5 GHz band, while channels 1 to 13 are in the 2.4 GHz band. This is the most reliable way to distinguish between bands if the system interface is silent.
⚠️ Caution: Be careful in the engineering menu. Do not change parameter values unless you know exactly what they do, as this may cause instability in the communication module.
What should I do if the engineering menu code doesn't work?
On some global Xiaomi firmware versions, access to the CIT menu via USSD code may be blocked. In this case, try entering the code through the "Testing" app (if preinstalled) or use the ADB command method, which requires a PC connection.
Analysis via third-party scanning applications
If built-in tools don't provide a complete answer, specialized utilities from Google Play come to the rescue. Apps like WiFi Analyzer or Fing They can read driver data and display it in a convenient graphical format. They show not only your network but also neighboring ones, helping you assess the noise level in the air.
After installing the app, run a scan. Find your access point in the list of networks. The channel number and frequency will be listed next to the name or in the connection details. For example, channel 6 is 2.4 GHz, and channel 150 is 5 GHz. These programs often display a channel occupancy graph, which is useful for manually configuring the router.
The advantage of third-party software is the ability to see channel widthFor the 2.4 GHz band, the standard is 20 MHz, less commonly 40 MHz. For 5 GHz, typical widths are 40, 80, and even 160 MHz. If you see a width of 80 MHz, there's no doubt you're on a high frequency.
Checking the frequency via a computer and ADB
For advanced users with access to a PC, there's a method for testing using USB debugging. This method allows you to obtain raw data from the WiFi module, unfiltered by the phone's interface. You'll need to install ADB drivers and the Android Debug Bridge platform on your computer.
Connect your phone with a cable and enable USB debugging in the menu. For developers and run the command in the terminal:
adb shell dumpsys wifi | grep mInfoIn the command output, find the line with your network name. It will list the IP address and frequency in MHz. The numbers 2412, 2437 correspond to 2.4 GHz, and 5180, 5745 correspond to the 5 GHz band. This method guarantees accurate information, as the data is taken directly from the kernel system logs.
You can also use the command iwlist (root access required), which will show all available frequencies and the current operating frequency. However, on standard firmware without root access dumpsys is the most effective tool for deep diagnostics.
Channel and frequency correspondence table
To help you navigate technical data obtained through the engineering menu or scanners, we've prepared a summary table. It will help you quickly determine the range by channel number, which is often displayed in technical information.
| Frequency range | Channel numbers | Characteristic speed | Range of action |
|---|---|---|---|
| 2.4 GHz | 1 - 13 | up to 150 Mbit/s | High (up to 50 m) |
| 5 GHz (low) | 36 - 64 | up to 433 Mbps | Medium (up to 30 m) |
| 5 GHz (high) | 100 - 165 | up to 866 Mbps | Low (up to 20 m) |
| 6 GHz (WiFi 6E) | 1 - 233 | more than 1 Gbit/s | Very low |
The table shows that channels above 100 allow for maximum speeds, but have lower penetration capability. If your phone Xiaomi shows a connection on channel 36, which means you are in a strong 5 GHz reception area, but perhaps not at the maximum speed that the router is capable of delivering.
Why can't my phone see the 5 GHz network?
A common problem for users is the absence of a 5 GHz network in the list of available networks, even though the router is broadcasting it. This may be due to the smartphone's regional settings. In some countries, the use of certain 5 GHz channels is restricted by law, and the phone simply ignores them.
In addition, older models of budget lines Redmi may have a WiFi module that only supports 2.4 GHz. You can check your device's specifications on the official website or in the app. About the phone, finding the exact model of the processor and communication module. Hardware limitation It is impossible to bypass it programmatically.
Another possible cause could be a router configuration: if "Smart Connect" mode is enabled (combining 2.4 and 5 GHz into a single network with the same name), the phone automatically decides which frequency to use. In this case, checking the frequency separately using the network name is impossible.
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The influence of channel width on speed and stability
In addition to frequency, channel width is an important parameter. In the 2.4 GHz band, a channel width of 20 MHz is recommended for maximum stability, as 40 MHz in this range is highly susceptible to interference from neighboring routers and household appliances.
For the 5 GHz band, the situation is reversed: here, you should aim for a bandwidth of 80 MHz or 160 MHz. This is what provides the speed boost. However, if you're far from the router, a narrow 40 MHz channel can provide a more stable connection than a wide but noisy 80 MHz channel.
The optimal choice for Xiaomi in an apartment building is the 5 GHz band with a channel width of 80 MHz and the choice of a free channel (for example, 36, 44 or 149) to avoid interference with neighbors.
Frequently Asked Questions (FAQ)
Can MIUI update change supported frequencies?
A firmware update typically doesn't change the hardware capabilities of the WiFi module. However, it can fix software bugs that prevent proper band switching or add support for new standards if they were blocked by software in a particular region.
Why does WiFi speed drop when I move to another room?
Speed drops due to signal attenuation. The 5 GHz band has a shorter wavelength, which penetrates walls and concrete floors less effectively than 2.4 GHz. As you move further away from the router, your phone may automatically switch to the longer-range but slower 2.4 GHz band.
How to force Xiaomi to work only in 5 GHz?
Android's default settings don't include a band selection feature. The phone automatically selects the best network. To force the device to use the best network, you can use third-party WiFi management apps or hide the 2.4 GHz network on your router, leaving only the 5 GHz band.
Does the case affect 5GHz signal reception?
Yes, it does. Metallic cases or cases with magnetic elements can shield the signal. Since 5 GHz is more sensitive to obstacles, a tight case can cause connection loss or a fallback to the 2.4 GHz band.