The speed of the internet connection and the stability of the smart home directly depend on what Wi-Fi standard used by your equipment. Many users go years unaware that their modern router is operating in outdated mode due to incorrect settings or outdated drivers on their smartphone. Understanding the difference between 802.11n, 802.11ac and the newest Wi-Fi 6 will help you get the most out of your provider's tariff.
In this article, we'll cover all available diagnostic methods, from built-in operating system tools to specialized software. You'll learn how to quickly determine your current link speed, frequency range, and wireless network generation without needing to be a network engineer. Accurately identifying the communication protocol is the first step to resolving issues with slow speeds or constant connection drops.
It often happens that a provider promises gigabit speeds, but in reality you only get a small part of the capabilities. This happens if your device is connected using the standard 802.11g instead of 802.11acLet's figure out how to avoid such situations and conduct a complete audit of your home network.
Basic concepts and generations of wireless networks
Before moving on to practical actions, it is necessary to briefly familiarize yourself with the evolution of standards. Institute IEEE develops the specifications that we know as Wi-FiEach new generation brings not only increased speed, but also improvements in energy efficiency and performance with multiple connected devices.
The oldest standard still in use today is 802.11b, followed by a faster one 802.11g. However, for many years the gold standard remained 802.11n, which brought dual-band operation for the first time. Modern networks are based on 802.11ac (Wi-Fi 5) and 802.11ax (Wi-Fi 6).
- 📡 802.11n (Wi-Fi 4) — operates at a frequency of 2.4 GHz, maximum theoretical speed up to 600 Mbps.
- ⚡ 802.11ac (Wi-Fi 5) — uses the 5 GHz range, providing speeds of up to several Gbps.
- 🚀 802.11ax (Wi-Fi 6) — optimized for dense development and multiple gadgets, significantly reducing latency.
⚠️ Please note: Support for the new standard in your router does not guarantee its operation. The receiving device (laptop, phone) must also support the corresponding protocol.
Understanding these differences is critical when purchasing new equipment. If you purchase a router that supports Wi-Fi 6, but connect an old laptop with a 2010 module to it, the connection will be established at the lowest common denominator.
Checking the WiFi standard on a Windows computer
The Windows operating system provides ample tools for diagnosing connections, although the information is sometimes buried deep in menus. The fastest way to get basic information is to use the network connections interface. Press the key combination Win + R, enter the command ncpa.cpl and press Enter.
In the window that opens, find your wireless connection, right-click it, and select "Status." The dialog box that opens will show your current connection speed. However, to find out exactly standard, and not just the speed, you need to click the "Details" button.
The "Description" or "Protocol" line often lists the adapter model. For more accurate information, it's best to use the command line. Open the terminal (cmd) and enter the command:
netsh wlan show interfacesIn the command output, find the line "Radio type." This is where the active standard will be indicated, for example, 802.11ac or 802.11axThis is the most reliable method and does not require installing third-party software.
What should I do if the Radio Type line says 802.11n?
If you have a modern router but your computer is displaying the older 802.11n standard, try updating your wireless adapter drivers through Device Manager or the laptop manufacturer's website. Also, make sure you're connected to a 5 GHz network, not a 2.4 GHz one.
For a more in-depth analysis, you can use the Device Manager. Find your network adapter in the list, open its properties, and go to the "Advanced" tab. There, you can often manually set the preferred operating mode by selecting VHT (for ac) or HE (for ax), if the driver allows.
WiFi diagnostics on Android and iOS smartphones
Mobile operating systems are more closed, but they still allow you to get the necessary information. On devices Apple The process is as simplified as possible, but requires one specific action. For users Android is a little luckier in terms of detail, but the interface may differ depending on the manufacturer's shell.
On your iPhone or iPad, open "Settings" -> "Wi-Fi." Find the network you're connected to and tap the blue information icon (the "i" in a circle). Scroll down to the "Protocol" section. It will show your current connection, for example, Wi-Fi 5 (802.11ac).
If this field contains Wi-Fi 4, then your device isn't utilizing the router's full potential. This could be because the iPhone is far from the access point or in an area with strong interference, causing the system to automatically switch to a more stable but slower standard.
- 📱 iOS 15 and later — displays the Wi-Fi generation (4, 5, 6) directly in the network settings.
- 🤖 Android 10+ — often shows the standard in additional network properties or through the menu "About phone" -> "Status".
- 🔍 Third-party utilities - applications like WiFi Analyzer show detailed information about the channel and protocol.
⚠️ Note: On some Android models, full technical information is hidden in the engineering menu. Accessing it may require special codes or root access, which is not recommended for those without experience.
If you're seeing low speeds or an outdated connection, try disabling power saving mode. Sometimes the system artificially limits Wi-Fi power to improve battery life.
Analyzing settings via the router's web interface
The most reliable way to find out which standards are allowed on your network is to look at the router's settings. To do this, you need to enter the gateway IP address (usually 192.168.0.1 or 192.168.1.1) in the browser's address bar. The login and password are usually located on a sticker on the bottom of the device.
Interfaces from different manufacturers (TP-Link, ASUS, Keenetic, MikroTik) are different, but the logic is the same. You need to find the section related to the wireless network. It may be called "Wireless," "Wi-Fi," or "Wireless Mode." This is where you configure operating modes.
There's usually a drop-down list called "Mode." If "Mixed" is selected, the router attempts to serve all devices. However, for maximum performance, it makes sense to separate the networks or force the priority of new standards.
☑️ Checking router settings
In modern dual-band routers, settings for 2.4 GHz and 5 GHz are often separated into different tabs. Make sure the 5 GHz band is enabled. 802.11ac or 802.11axIf the "802.11n only" box is checked, new devices will not be able to connect at high speed.
Using specialized software for Windows
Windows' built-in tools are sometimes insufficient for in-depth analysis, especially when you need to see signal strength over time or a list of all neighboring networks and their standards. Third-party utilities provide this information in a convenient graphical form.
One of the best free programs is WiFi Analyzer (available in the Microsoft Store). It not only shows what channel your network is on, but also clearly identifies the standard for each visible access point. This helps you determine if your airwaves are being clogged by neighboring networks.
Another powerful tool is the utility Acrylic Wi-Fi Home. It provides a detailed table where for each network the BSSID, channel, channel width, and security standard. The "APs" tab contains a "Standard" column, which will say 802.11n, 802.11ac etc.
| Program | Platform | Price | Key feature |
|---|---|---|---|
| WiFi Analyzer | Windows 10/11 | For free | Simple channel chart |
| Acrylic Wi-Fi | Windows | Freemium | Package details |
| NetSpot | Win / macOS | Paid | Building heat maps |
Using such software is especially useful in apartment buildings. You'll be able to see if your neighbor's router is jamming your signal by operating on the same channel but at a higher power level or using a broader standard.
The influence of channel width and frequency on the standard
You can't consider the Wi-Fi standard without considering the channel width. Even if you are connected 802.11ac, but the channel width is set to 20 MHz, you will not get high speeds. For the standard ac And ax The minimum comfortable width is 80 MHz.
Frequency range also plays a key role. Standard 802.11n can operate on both 2.4 GHz and 5 GHz. However, the standards 802.11ac And 802.11ax (mostly) are tuned for 5 GHz. If you see that the connection is going to 2.4 GHz, then most likely you are using 802.11n or old 802.11g.
⚠️ Note: Increasing the channel width to 160 MHz may increase speed, but will significantly reduce the number of available channels and increase susceptibility to interference. In multi-apartment buildings, 80 MHz is often better for stability.
You can check the current channel width in the same Windows command line using the command netsh wlan show interfacesThe setting is called "Channel width." If it says 20 MHz, but your router supports more, check your router settings; it might be set to automatic selection and that's causing the error.
Common problems and their solutions
Users often encounter a situation where their speed doesn't improve after purchasing a new router. Most often, the problem lies with the computer's network adapter drivers. The operating system may install a "universal" driver that doesn't support new protocols.
Visit your laptop or motherboard manufacturer's website (if you have a PC) and download the driver specifically for the Wi-Fi module. Don't rely on automatic Windows updates. After installing the updated driver, restart your computer and retest the connection.
Another issue is "smart" band switching. The router can detect that the 5 GHz signal is weaker and switch the device to 2.4 GHz for stability. In this case, the device switches to 802.11nThe solution is to separate network names (SSID) for different frequencies or use the "Band Steering" function (if it is implemented correctly).
If nothing helps, try resetting your network settings. In Windows, this can be done via Parameters -> Network and Internet -> Network resetThis will delete all saved profiles and reset the network settings to factory defaults.
FAQ: Frequently Asked Questions
Why does the router say AC1200, but the speed is low?
The AC1200 rating represents the combined theoretical speed across all antennas and bands. In reality, speed depends on distance, walls, interference, and the capabilities of your device. Additionally, some of the speed is consumed by protocol overhead.
Can Wi-Fi 6 work with older devices?
Yes, standard 802.11ax Wi-Fi 6 is fully backward compatible. Older devices will still work on the network, but they will use their native standards (n or ac) and will not benefit from the new technology.
How do I know if my laptop supports 5GHz?
In the command line, enter netsh wlan show drivers. Find the line "Supported radio types". If there is 802.11a, 802.11ac or 802.11ax, which means that 5 GHz support is present.
Does the provider's tariff affect the Wi-Fi standard?
No, your plan determines the "entry" speed into your apartment. The Wi-Fi standard determines the data transfer speed within your local network between the router and the device. If your plan is 100 Mbps and your Wi-Fi allows 300 Mbps, you'll get 100 Mbps. If your plan is 500 Mbps and your Wi-Fi is older, you'll hit the Wi-Fi ceiling.