How do you know if your Wi-Fi router is 2.4 GHz, 5 GHz, or 6 GHz?

Have you noticed that your internet speed is slowing down on some devices, while remaining consistently high on others? Or maybe your new smartphone stubbornly refuses to connect to a network that your old laptop can easily connect to? The most common cause is Wi-Fi frequency, which your router operates on. Modern routers support multiple ranges at once— 2.4 GHz, 5 GHz, and sometimes 6 GHz, - and each device “prefers” its own.

But how do you know what frequency is being used right now? Spoiler: it's not always obvious. Router manufacturers (from budget ones TP-Link And D-Link to bonuses ASUS RT-AX88U or Netgear Nighthawk) hide this information in various menus, and sometimes don't display it explicitly at all. In this article, we'll look at all verification methods — from basic (label inspection) to advanced (spectrum analysis using specialized utilities). You'll also learn how the same network can operate on two frequencies simultaneously, and why it is important for connection stability.

1. Why is it important to know the Wi-Fi frequency?

Ranges 2.4 GHz And 5 GHz (and now 6 GHz) are not just numbers. They determine:

• 📶 Coverage range: 2.4 GHz passes through walls better, but is more susceptible to interference from neighboring networks and household appliances (microwaves, baby monitors).
• ⚡ Connection speed: 5GHz and 6GHz provide higher throughput but at a shorter range.
• 📱 Device compatibility: old gadgets (eg iPhone 5 or Samsung Galaxy S3) do not support 5 GHz, but new flagships are already mastering 6 GHz.

Example from life: if your Smart TV 2018 If you're connected to 5 GHz and the router is in another room, the signal may drop out while watching 4K content. Switching to 2.4 GHz will solve the problem, but download speeds will decrease. Knowing your current frequency helps. optimize the network for specific tasks.

⚠️ Note: Some routers (eg. Keenetic or MikroTik) by default create two separate networks for different frequencies (for example, MyWiFi_2G And MyWiFi_5G). If you see only one network, it means the mode is enabled. Smart Connect, and the frequency is selected automatically.

2. Method 1: Look at the router label

The easiest method is to inspect the device's casing. There's usually a sticker with technical specifications on the back or bottom of the router. Look for the following markings:

• 🔍 802.11n - supports only 2.4 GHz (obsolete standard).
• 🔍 802.11ac — works on 5 GHz (sometimes compatible with 2.4 GHz too).
• 🔍 802.11ax (Wi-Fi 6/6E) - supports 2.4 GHz, 5 GHz and 6 GHz.
• 🔍 Dual-Band or Tri-Band — the router can operate on several frequencies simultaneously.

Example of a label TP-Link Archer C6:

Model: Archer C6
Wi-Fi: 802.11ac (Dual-Band)
2.4GHz: up to 300 Mbps
5GHz: up to 867 Mbps

If the sticker says Single-Band, your router is working only on 2.4 GHzThis is relevant for budget models like Tenda N301 or D-Link DIR-300.

⚠️ Attention: The label shows maximum capabilities router, but not the current frequency! For example, even if the device supports 5 GHz, the network may only be configured for 2.4 GHz.

3. Method 2: Check in the router's web interface

The exact method is to access your router's control panel. The instructions are universal for most brands (ASUS, Zyxel, Tenda etc.), but the paths to the settings may differ.

Open your browser and enter the IP address (usually 192.168.0.1 or 192.168.1.1)

Enter login/password (by default it is often admin/admin)

Go to the section Wi-Fi, Wireless network or Wireless>

Find the parameter Band, Frequency or Wireless Mode

-->

Examples of paths for popular models:

If in the settings you see two separate networks (For example, MyWiFi And MyWiFi_5G), then the router is broadcasting both ranges. If only one network, check the mode. Smart Connect (it automatically distributes devices by frequencies).

4. Method 3: Use mobile apps

Don't want to fiddle with settings? Install one of the specialized Wi-Fi analyzer apps. They'll show not only your network frequency, but also signal strength, channels, and airtime.

• 📱 WiFi Analyzer (Android) - free, shows range (2.4/5/6 GHz), channels and signal strength.
• 📱 NetSpot (Windows/macOS/iOS) — Builds a network heat map and determines frequency.
• 📱 Fing (Android/iOS) - Scans the network and displays technical data, including the Wi-Fi standard (n/ac/ax).

How to use WiFi Analyzer:

1. Open the app and wait for the scan.
2. Go to the tab Channel Graph.
3. Find your network in the list - the frequency will be indicated next to the name (for example, 2.4GHz Ch6 or 5GHz Ch36).

Example of display in NetSpot:

SSID:         MyHomeWiFi
BSSID:        AA:BB:CC:DD:EE:FF
Band:         5 GHz
Channel:      44
Width:        80 MHz

⚠️ Note: Apps show frequency current connectionIf your smartphone is connected to 2.4 GHz and your router also broadcasts 5 GHz, the app won't display the second frequency!

What should I do if the app doesn't see the 5 GHz network?

If your smartphone does not detect the 5 GHz network, check:

1. Does the device support this range (eg. iPhone 4S (works only on 2.4 GHz).

2. Is 5 GHz enabled in the router settings (sometimes it is disabled by default).

3. Is the router in the offline mode? 802.11n only (This standard can only work on 2.4 GHz).

5. Method 4: Command Prompt (for Windows and macOS)

If you prefer console methods, you can find out the Wi-Fi frequency via the command line or terminal.

For Windows:

1. Open Command line (Win + R → cmd).
2. Enter the command:

   netsh wlan show interfaces

3. Find the line Channel And Radio type. Example output:

   Radio type    : 802.11n
   Channel       : 6
   Receive rate  : 150

   Here 802.11n on the channel 6 means 2.4 GHzIf only there were 802.11ac on the channel 36, This 5 GHz.

For macOS:

1. Open Terminal (Applications → Utilities).
2. Enter:

   airport -s

3. In the list of networks, find yours in the column CHANNEL the channel will be indicated, and the frequency will be determined by its number:
   • Channels 1–14 → 2.4 GHz.
   • Channels 36–165 → 5 GHz.
   • Channels 1–233 (in some countries) → 6 GHz.

This method is suitable if you want to know the frequency current connection, but it will not show all available ranges of the router.

6. Method 5: Analysis using specialized utilities (for advanced users)

If you need as accurate as possible information (for example, to set up a Mesh system or search for interference), use professional tools:

• 🖥️ Wireshark + adapter in monitoring mode - will show all networks on the air with details by frequencies, channels, and standards.
• 🖥️ Acrylic Wi-Fi (Windows) - Visualizes channel load and identifies ranges.
• 🖥️ Kismet (Linux/macOS) - a powerful sniffer for analyzing wireless networks.

Example of output in Acrylic Wi-Fi:

SSID:          MyWiFi_5G
BSSID:         00:11:22:33:44:55
Frequency:     5.180 GHz (Channel 36)
Standard:      802.11ac (VHT80)
Signal:        -65 dBm

These tools require work experience and often additional equipment (for example, a Wi-Fi adapter with monitoring mode support). But they provide a complete picture, including:

• 📊 Load on each channel.
• 🔄 Overlapping neighbors' networks.
• 📡 Signal strength in dBm.

⚠️ Warning: Using sniffers like Wireshark to intercept traffic from other networks illegally In most countries. Analyze only your own network!

7. How do you know which frequency is best for your devices?

Now that you know how to determine the frequency, all that's left is to choose the optimal one. Here are some quick guidelines:

If your router supports Wi-Fi 6E (6 GHz), use this range for the most modern devices (iPhone 15, Samsung Galaxy S23, MacBook Pro M3). It is less loaded and provides maximum speed, but has even shorter range, than 5 GHz.

8. Common mistakes and how to avoid them

When working with Wi-Fi frequencies, users often encounter typical problems:

• ❌ The device does not see the 5 GHz network:
  • 🔹 Check if the range is enabled in your router settings.
  • 🔹 Update the Wi-Fi adapter driver on your device.
  • 🔹 Make sure your device supports 5 GHz (e.g. iPad 2 - No, iPad Air — yes).
• ❌ 5GHz speed is slower than 2.4GHz:
  • 🔹 You may be far from the router—5 GHz is less effective at passing through walls.
  • 🔹 Check if the channel is overloaded (use WiFi Analyzer).
  • 🔹 Try changing the channel width with 20/40 MHz on 80 MHz (in the router settings).
• ❌ The router does not save frequency settings:
  • 🔹 Reset your router to factory settings and set it up again.
  • 🔹 Check your firmware version - it may need an update.

If after changing the frequency the internet starts to work worse, return to the previous settings and try change the channel manually. For example, in the 2.4 GHz range, channels 1, 6 And 11 do not overlap - choose the one that is least occupied by neighboring networks.

⚠️ Note: In some countries (for example, in Russia) the range must be used 6 GHz may be required equipment certificationBefore purchasing a router with Wi-Fi 6E, check whether this band is permitted in your region.

FAQ: Answers to Frequently Asked Questions

My router supports both 2.4 GHz and 5 GHz. How do I know which frequency my device is connected to?

The methods depend on the OS:

• Windows: Control Panel → Network and Internet → Network and Sharing Center → Wireless Network → Details. Look for the line Radiotype.
• Android: Install the application WiFi Analyzer and check the current network.
• iOS: Press and hold the Wi-Fi icon in the control panel - the network name will appear. If there is a _5G, this is 5 GHz.

Is it possible to use 2.4GHz and 5GHz at the same time on one router?

Yes, if the router dual-band (Dual-Band). Enable both bands in the settings and give them different names (e.g. MyWiFi_2G And MyWiFi_5G). Devices will connect to them independently.

Some routers (eg. ASUS or Netgear) support the regime Smart Connect, which automatically assigns devices to frequencies. However, in this case, you won't be able to manually select the band.

Which channel is best for 2.4 GHz?

In the 2.4 GHz band, channels overlap. Optimal non-overlapping channels are 1, 6 And 11To choose the best one:

1. Scan the airwaves with WiFi Analyzer.
2. Select the channel that is least occupied by neighboring networks.
3. Avoid channels 12–14 - they may be banned in your country.

Why is my 5GHz network slower than 2.4GHz?

The reasons may be as follows:

• 📡 Weak signal—5 GHz has a harder time penetrating obstacles. Try moving closer to the router.
• 🔄 Overloaded channel - change the channel in the router settings (for example, from 36 on 48).
• 🖧 Outdated Wi-Fi adapter driver - update it via device Manager (Windows) or Software update (macOS).
• ⚙️ Incorrect channel width - please set 80 MHz for maximum speed (if your router supports it).

Does my router support Wi-Fi 6 (802.11ax)?

Check your router model on the manufacturer's website or check the label. The following standards support Wi-Fi 6:

• 802.11ax - basic Wi-Fi 6 (2.4 GHz and 5 GHz).
• Wi-Fi 6E - extended version with support 6 GHz.

Examples of routers with Wi-Fi 6: TP-Link Archer AX6000, ASUS RT-AX86U, Netgear RAXE500.