Modern users are faced with the need for fast data transfer: 4K online gaming, streaming, and video calls require a stable connection, which the standard 2.4 GHz band often can't provide. Many device owners aren't even aware that their equipment is capable of operating at higher speeds if they configure the network correctly or simply understand which frequency band is currently being used. Confusion arises from the similarity of technology names: users often search for "5G," implying fifth-generation mobile communications, while actually referring to the Wi-Fi standard. 802.11ac or ax, operating at a frequency of 5 GHz.
Determining your current connection speed is the first step to optimizing your home network and eliminating internet bottlenecks. In this article, we'll cover software and hardware testing methods and explain why your phone might not see a high-speed network, even if your router is broadcasting it. Understanding these nuances will allow you to get the most out of your existing equipment without spending extra money on new gadgets.
It is important to note right away that the presence of support for the standard Wi-Fi 5 (or newer) does not yet guarantee automatic switching to the 5 GHz frequency. Many routers by default combine the 2.4 and 5 GHz bands under one name (SSID), and the frequency selection occurs automatically, which is not always effective. You will need to go into settings or use special utilities to force a check of the current connection status and, if necessary, separate the networks.
The Differences Between 2.4GHz and 5GHz: Why It's Important to Know
The fundamental difference lies in the physical properties of radio waves of different wavelengths. The 2.4 GHz band has greater penetrating power and better bypasses obstacles such as walls and furniture, but it has a narrow channel and is heavily contaminated by household appliances like microwaves and Bluetooth devices. This results in a reduction in actual speed even with a full signal strength.
In turn, the 5 GHz frequency provides a wider data transmission channel, which is critical for high throughputHowever, these waves are less effective at penetrating solid walls and concrete floors. If you're in the same room as your router, the 5 GHz speed may be significantly higher, but step out into the hallway and the signal may completely disappear, while 2.4 GHz will continue to work.
Understanding these physical limitations helps you plan your equipment placement correctly. If your goal is to cover a large apartment with thick walls, pure 5 GHz can be a challenge, and this is where mesh system technologies or properly separating network names for different tasks come in handy.
⚠️ Please note: Some older devices (laptops from before 2013, budget smartphones) do not physically have a 5 GHz module. Checking the specifications of your specific device is essential before attempting to configure the router.
Visually check the network names (SSID) in the list of available ones
The easiest way to perform a basic diagnosis is to look at the list of available wireless networks. Router manufacturers often use standard naming patterns that allow you to accurately determine the frequency type without delving into the settings.
Suffixes are usually added to the base network name. For example, if your router is called "HomeWiFi," the 5 GHz network might be displayed as "HomeWiFi_5G," "HomeWiFi_5GHz," or "HomeWiFi_A." The letter "G" or the number "5" at the end of the name often (but not always) indicates a high-speed band.
- 📡 Look for suffixes
_5G,_5GHzor_ACat the end of the network name. - 📡 Pay attention to the separation: if you see two networks with the same name, but one of them has a prefix, this is a sign of manual separation of ranges.
- 📡 Pay attention to the standard 802.11n (Wi-Fi 4) - it can work on both 2.4 and 5 GHz, so the standard is not enough.
However, you can't rely solely on the network name. The administrator could have named the 5 GHz network anything, for example, "FastInternet," while leaving the main network unchanged. Furthermore, modern routers with this feature Smart Connect hide the difference by creating a single point of access.
Checking frequency on Android and iOS
Mobile operating systems provide different levels of access to technical connection information. On Apple devices, obtaining accurate data is easier, as iOS readily shares this information in the standard menu, while Android requires the use of third-party tools or hidden menus.
On iPhone or iPad, you need to go to Settings → Wi-FiFind the name of the network you're connected to and click the blue information icon (the letter "i" in a circle). In the menu that opens, scroll down to the "Frequency" line. If it says "5 GHz," you're using the fast band. If it says "2.4 GHz," you're in the coverage area of the older standard.
In the Android world, the situation is more complicated due to manufacturer skins. On stock Android (such as Pixel or Motorola), this information is often hidden. Click the gear icon next to the network name or select "Network Properties." Look for the "Frequency" line. If it shows a value around 2400-2480 MHz, it's 2.4 GHz. Values of 5100-5900 MHz indicate 5 GHz.
Hidden Android Menu
On some Samsung and Xiaomi smartphones, you can find out the frequency through the engineering menu. Enter the code ##4636## In the dialer, select "Wi-Fi Information" (the path may differ depending on the OS version).
If standard tools fail to provide information, it's worth using specialized analyzer applications, which we'll discuss in the next section. They display not only the current frequency but also the channel noise level.
Using Wi-Fi analyzer apps
For in-depth diagnostics and a precise answer to the question "how to determine if 5G WiFi is enabled," professional utilities are best. They read data directly from the device's Wi-Fi module, bypassing the limitations of the operating system interface.
One of the most popular and informative programs is WiFi Analyzer (Available for Android, with similar apps for iOS and Windows). After launching the app, go to the "AP List" (Access Points) or "Table View" tab. Find your network in the list.
The "Frequency" or "Channel" column will display the exact value. The 5 GHz band typically uses channels numbered above 36 (e.g., 36, 40, 44, 149, 153) and frequencies above 5000 MHz. The 2.4 GHz band is limited to channels 1 through 13 and frequencies up to 2484 MHz.
- 📊 The app will show a channel load chart, which will help you choose the least noisy one.
- 📊 You will see the actual connection speed (Link Speed), which on 5 GHz often exceeds 400 Mbps.
- 📊 You can check the channel width: for 5 GHz the norm is 80 MHz, which is not available for 2.4 GHz.
Using such tools is especially useful in apartment buildings, where the airwaves are saturated with neighbors' signals. You'll be able to see whether your router is switching devices to a clear frequency or keeping them on a busy one.
☑️ Diagnostics via app
Diagnostics via the router's web interface
The most reliable way to understand your network configuration is to look "under the hood" of the router itself. The administrator's web interface provides comprehensive information about the status of wireless modules and connected clients.
To log in, enter the router's IP address (usually 192.168.0.1 or 192.168.1.1) and log in. Find the "Status" or "Wireless" section. There's often a separate "Client List" or "Statistics" page there.
In the list of connected devices, next to the name of your phone or laptop, the connection standard will be indicated (802.11ac, 802.11ax) and frequency. If the device is connected via 5 GHz, you'll see a corresponding label or a high link speed (e.g., 866 Mbps).
| Parameter | 2.4 GHz band | 5 GHz band |
|---|---|---|
| Typical speed | up to 150 Mbit/s | up to 1000+ Mbps |
| Channels | 1-13 (narrow) | 36-165 (wide) |
| Penetration | High | Low |
| Workload | High (neighbors, equipment) | Low |
⚠️ Note: Router interfaces (Asus, TP-Link, Keenetic, MikroTik) are constantly being updated. The menu layout may differ from what's described; look for sections labeled "Wireless," "WLAN," or "Wi-Fi."
Test on a computer (Windows and macOS)
On personal computers, diagnostics are also available using built-in tools, although they require knowledge of several commands or menu paths.
In Windows 10 and 11, right-click the Wi-Fi icon in the system tray and select "Network & Internet Settings." Go to "Properties" for the active connection. In the list of parameters, find the "Frequency" (or "Band") line. The system will clearly indicate "2.4 GHz" or "5 GHz."
An alternative method for advanced users is the command line. Click Win + R, enter cmd and press Enter. Enter the command:
netsh wlan show interfacesIn the command output, look for the "Channel" line. If the channel number is greater than 14, you're definitely in the 5 GHz band. The "Radio type" line will also indicate the standard: 802.11ac or 802.11ax almost always mean operation at 5 GHz.
On macOS, the process is even simpler: hold down the key Option on your keyboard and click the Wi-Fi icon in the top menu bar. The drop-down list will display detailed technical information, including the "Channel" line, which displays the frequency in MHz.
What to do if 5 GHz is not detected or does not work
If the test shows that your device only operates on 2.4 GHz, even though your router supports a higher frequency, there could be several reasons. Often, the problem lies in the router's settings, where the 5 GHz band may simply be disabled or hidden.
The first thing to do is ensure the 5 GHz module is enabled in your router settings. Sometimes manufacturers disable it by default or enable the "Smart Connect" feature, which masks a separate network. Try temporarily disabling network aggregation and creating a separate SSID for 5 GHz.
The second important aspect is the Wi-Fi adapter drivers on your computer or laptop. If you have an older adapter, it may not physically support the standard. 802.11acCheck the adapter model in Device Manager and find its specifications on the manufacturer's website.
- 🛠 Update your Wi-Fi adapter drivers to the latest version.
- 🛠 In the adapter properties (in the Device Manager), check the "Advanced" tab and make sure that the operating mode is not limited to 2.4 GHz only.
- 🛠 Make sure the region in your router settings is set correctly, as some countries restrict certain 5 GHz channels.
Distance is also important to consider. If you're far from the router or there are several concrete walls between you, the device may automatically switch to 2.4 GHz to maintain connection stability, ignoring speed.
Why does my phone say 5G but the internet is slow?
The "5G" icon in your phone's status bar indicates a connection to your carrier's fifth-generation mobile network, not a Wi-Fi router. These are two different technologies. Speeds may be slow due to poor carrier coverage or data caps, even if the icon is lit.
Is it possible to increase the range of 5GHz?
Physical laws limit the range of high frequencies. It can be increased by replacing the router's antennas with more powerful ones (if they are removable) or by installing an additional access point (repeater) supporting 5 GHz midway along the signal path.
Does an Ethernet cable affect Wi-Fi speed?
The cable does not have a direct impact on the radio signal, but if the cable connecting the router to the provider's modem has a low category (below Cat5e), it will cut the incoming speed for all devices, regardless of the Wi-Fi frequency.