The speed and stability of a wireless connection directly depend on the frequency your equipment operates on. Many users confuse megahertz (MHz) with megabits (Mbps), but in the context of radio waves, we're talking about the frequency range, which determines the range and penetration of a signal. Understanding the difference between frequencies 2.4 GHz And 5 GHz is the key to fixing network dropouts or slow download speeds.
Modern routers Wi-Fi routers are often dual-band, meaning they broadcast two networks simultaneously, but not all devices can switch between them correctly. If you're wondering how to find out how many MHz your Wi-Fi router currently supports, you don't need to find the device's box or delve into complex technical specifications. There are many software and hardware options for checking your current connection status.
What is the difference between 2.4 GHz and 5 GHz
The main difference lies not only in the numbers, but also in the physical properties of radio waves. Range 2.4 GHz is an older and more common type; it has better wall penetration but lower bandwidth. This range is often overloaded with signals from neighbors, microwave ovens, and Bluetooth devices, causing interference.
In turn, the frequency 5 GHz Provides higher data transfer speeds and lower latency (ping), which is critical for online gaming and 4K video. However, its range is shorter and it's less effective at penetrating solid structures. Therefore, knowing the current frequency helps us understand why the internet is lightning fast in one room, while pages barely load in another.
It is important to note that gigahertz — is a measure of oscillation frequency, not internet speed. A router may operate at 5 GHz, but if your ISP has allocated you a low speed, your internet won't get any faster. However, using a wider channel at a higher frequency allows you to fully utilize the potential of your data plan.
⚠️ Attention: Not all devices support the 5 GHz band. Older smartphones, laptops, and IoT gadgets (smart light bulbs, sockets) often only have 2.4 GHz modules. Trying to connect them to a 5 GHz network is doomed to failure.
Checking the frequency on Windows 10 and 11
Windows operating systems offer built-in network diagnostic tools that allow you to instantly check your current connection speed. This is the fastest way and doesn't require installing any additional software. You'll need access to your network settings or the command prompt.
The first method is to use the graphical interface. Open the list of available Wi-Fi networks and click on the properties of the currently connected network. In the window that opens, scroll down to the "Properties" section. The "Frequency band" value will be listed there. If you see the value 5 GHz, then you are at high speed if 2.4 GHz - on low.
The second method is more advanced and works on any version of Windows. Open the Command Prompt (CMD) or PowerShell. Enter the command netsh wlan show interfacesIn the list that appears, find the "Channel" line. Channels numbered 1 through 13 are in the 2.4 GHz band, while channels numbered 36 and above (e.g., 149, 153) are in the 5 GHz band.
You can also use PowerShell for more detailed information. Enter the command:
netsh wlan show interfaces | findstr /C:"Channel" /C:"Band"This will allow you to quickly filter out unnecessary information and see only the parameters you need. If the "Band" line indicates 5GHz, then your adapter works in the modern standard.
☑️ Wi-Fi diagnostics on PC
How to find the frequency on Android and iOS
Mobile devices also hide this information, but it can be found in different ways depending on the OS version and the manufacturer's shell. On Android, the situation is simpler, as the system is more open to the user.
On Android 10 and newer, just go to Settings → Wi-Fi, click the gear next to the active network or the network name. In the "Frequency" or "Network Details" section, you'll see either 2.4 GHz or 5 GHz. On some smartphones (e.g., Xiaomi or Samsung) This information can be seen by clicking on the QR code to connect - the network type is often displayed in the data line.
On iPhone (iOS), things are more complicated. Apple hides the technical details of the Wi-Fi connection in the standard menu. To find out the frequency, you'll need a third-party app, such as AirPort Utility from Apple (requires enabling a hidden feature in the app's settings) or free Wi-Fi analyzers such as WiFi Analyzer. In the appendix AirPort Utility You need to go to the settings and turn on the "Wi-Fi Scanner" toggle switch, after which a scan button will appear on the main screen, showing the channel and frequency.
⚠️ Attention: Mobile operating system interfaces are frequently updated. Menu locations may vary depending on the version of Android (11, 12, 13, 14) or iOS (15, 16, 17). If you don't see the "Frequency" option, try using third-party analyzer apps from Google Play or the App Store.
Analysis via the router's web interface
The most reliable way to determine your equipment's capabilities is to look into the router's settings. This method will show not only the current frequency, but also the supported standards, channel width, and signal strength. Logging in usually requires entering an IP address (often 192.168.0.1 or 192.168.1.1) in the browser.
After authorization (login and password are often indicated on the sticker on the bottom of the device), go to the section Wireless or Wi-FiHere you'll see a division between 2.4G and 5G. If the 5G tab is missing, your router is single-band and physically can't operate at higher frequencies. Modern dual-band routers often have this feature enabled. Smart Connect, which combines both frequencies into one network with the same name.
In this case, the device itself decides where to connect the client. To separate the networks and force frequency checking, you can temporarily disable Smart Connect and give the networks different names, for example, MyWiFi And MyWiFi_5GThis will allow you to manually select the desired range on your phone or laptop and test the speed.
Comparison of Wi-Fi standards and their characteristics
Understanding frequencies is inextricably linked to Wi-Fi standards (802.11 a/b/g/n/ac/ax). Each standard imposes its own speed and frequency limitations. Below is a table to help you navigate the different wireless network generations.
| Standard | Year of implementation | Frequency | Max. speed (theoret.) |
|---|---|---|---|
| 802.11b | 1999 | 2.4 GHz | 11 Mbps |
| 802.11g | 2003 | 2.4 GHz | 54 Mbps |
| 802.11n (Wi-Fi 4) | 2009 | 2.4 / 5 GHz | 600 Mbps |
| 802.11ac (Wi-Fi 5) | 2014 | 5 GHz | 6.9 Gbps |
| 802.11ax (Wi-Fi 6) | 2019 | 2.4 / 5 / 6 GHz | 9.6 Gbps |
As can be seen from the table, the old standards 802.11b And 802.11g operate exclusively at 2.4 GHz. If your router only supports them, you won't be able to find out "how many MHz" it is in terms of switching to 5 GHz—your equipment won't allow it. Modern standards Wi-Fi 5 And Wi-Fi 6 are focused specifically on the high-speed range of 5 GHz and above.
It's also worth mentioning the new 6 GHz band, which is being introduced in the Wi-Fi 6E standard. It's virtually interference-free, but requires compatible hardware on both the router and the client. Currently, this is reserved for flagship devices.
Using third-party programs for analysis
Professionals use specialized software for in-depth diagnostics and visualization of the airspace. These programs show not only your frequency but also the channel load of your neighbors, which helps you select the optimal channel for configuring your router.
One of the best free utilities for Windows is WiFi Analyzer (available in Microsoft Store) or Acrylic Wi-Fi HomeThey plot graphs with frequency on the X-axis and signal strength on the Y-axis. You'll immediately see where your network is "humped." If your 2.4 GHz router is in the center of the graph, while 10 other neighbors are peaking, your speed will be low, regardless of your plan.
There is a built-in utility for macOS DiagnosticsTo launch it, hold down the key Option Click the Wi-Fi icon in the menu bar, then select "Open Wireless Diagnostics." From the "Window" menu, select "Scan" or "Performance." This is a powerful tool that will show detailed information about noise and channels.
⚠️ Attention: Be careful when downloading Wi-Fi analyzer programs. Many of them contain ads or malware in search results. Use only trusted sources, such as official app stores (Microsoft Store, App Store) or manufacturer websites.
Frequently Asked Questions (FAQ)
Can a 5GHz router work on 2.4GHz?
Yes, most modern routers are dual-band. They have separate radio modules for each frequency and can broadcast both networks simultaneously. However, if the router was originally purchased as a budget model with only 2.4 GHz support, it's not possible to add 5 GHz software—it requires the appropriate hardware.
Why doesn't my phone see the 5 GHz network?
Most likely, your smartphone or laptop has an old Wi-Fi adapter that doesn't physically support this band. Another possible cause could be region: in some countries (for example, Japan), not all 5 GHz channels are permitted, and if the router is configured for a restricted channel, the device won't be able to see the network. Try changing the region or channel in your router settings to a more standard one (e.g., 36-40).
Which is better for gaming: 2.4 GHz or 5 GHz?
Definitely 5 GHz. This range provides lower ping (latency) and is more stable, as it's less susceptible to interference from household appliances. This is critical for online shooters and competitive gaming. 2.4 GHz can experience ping drops and spikes even with good download speeds.
Does the number of antennas affect the frequency?
The number of antennas affects MIMO (Multiple Input Multiple Output) technology, which improves speed and stability, but doesn't directly determine the frequency. A router with one antenna can be dual-band, while one with four can only operate at 2.4 GHz. The frequency depends on the internal hardware and standard (802.11n/ac/ax), not on the number of external antennas.