Mobile internet speed on your home network directly depends on the technical specifications of your device. Many users complain about low speeds, even though their provider plan allows for much higher speeds. Often, the problem lies not with the router, but with limitations of the device itself.
In this article, we will look at how to accurately determine which wireless communication standards supports your smartphoneYou'll learn the difference between frequencies and how to read technical specifications without the help of an engineer.
Understanding these nuances will help you configure your router correctly or make an informed decision about purchasing new equipment. Don't overpay for a gigabit connection if your phone physically can't handle it.
Basic Wi-Fi standards: from 802.11n to Wi-Fi 7
The world of wireless networks is a confusing place. Router manufacturers like to use complicated acronyms, but for users, it's important to know the main generations. Older devices operate on the standard 802.11n, which is now called Wi-Fi 4It is outdated and rarely provides speeds above 150 Mbps.
Most modern mid-range and high-end smartphones support 802.11ac or Wi-Fi 5This standard operates primarily in the 5 GHz band. It enables speeds of several hundred megabits per second.
Flagship models of recent years are already equipped with modules 802.11ax, known as Wi-Fi 6 And Wi-Fi 6EThey provide a stable connection even with a large number of connected devices. The newest standard is Wi-Fi 7, which is just starting to appear in top smartphones released in 2026-2026.
⚠️ Please note: Wi-Fi 6 support does not guarantee operation at 6 GHz. This requires the 6E or Wi-Fi 7 specification.
The differences between generations are colossal. If your router broadcasts Wi-Fi 6, but your phone only supports Wi-Fi 4, your network will operate at the slowest speed. Therefore, it's important to understand the capabilities of both devices.
Checking characteristics through official websites
The most reliable way to find out the truth is to go to the source. Electronics manufacturers publish full specifications on their official websites. You don't need to be an expert to find the section you need.
Go to the manufacturer's website and enter your device model in the search. This is usually Settings → About phone On the device itself, check the model number to find the exact model name. Then look for the "Communications" or "Wireless Networks" section.
In the description of technical specifications, look for phrases like 802.11 a/b/g/n/ac/axThe presence of the letter "ac" means support for 5 GHz and the Wi-Fi 5 standard. If you see "ax," then the device is ready for Wi-Fi 6.
- 📱 Apple: On the iPhone page, look for the line "Wireless" or "Wi-Fi 6/6E".
- 🤖 Samsung: The specifications for the Galaxy S and A series indicate the supported standards.
- 🇨🇳 Xiaomi: often indicates Wi-Fi 6 support directly in the model name or in the first paragraph of the description.
- 🌐 Google: Pixel has full specifications in the Tech Specs section.
Don't blindly trust marketing names. Sometimes, "5G" is written in large print, which refers to mobile communications, not Wi-Fi. Carefully read the fine print for technical details.
Why do they write one thing in the store and another on the website?
Retailers often use simplified descriptions. Full technical information is always available only in the official manual or on the manufacturer's website.
Analyzing Android and iOS settings
Smartphone operating systems rarely display a full list of supported standards out of the box. However, indirect indicators can hint at your device's capabilities. This is slightly easier to do on Android than on iOS.
On devices running stock Android or skins like MIUI and One UI, you can find detailed information in the developer menu or through system apps. Go to Settings → About phone → Kernel version and quickly press 7 times to activate the developer menu.
The developer menu sometimes displays Wi-Fi status information, but it's often technical. An easier way is to look at available networks. If you see networks ending in _5G or _5GHz and you can connect to them, your smartphone definitely supports 5 GHz.
For iPhone owners, the situation is simpler: all models starting with the iPhone 6 support 5 GHz. iPhone 11 and newer support Wi-Fi 6. iPhone 15 and newer already support Wi-Fi 6E. Apple is secretive about the exact technical specifications, but the device model clearly dictates the standard.
⚠️ Note: Settings interfaces may differ depending on the operating system version and the manufacturer's shell.
Using third-party diagnostic applications
If you're too lazy to search for specifications manually, specialized utilities can help. Wi-Fi analysis apps can read information directly from the smartphone's communication module. This provides the most accurate results in real time.
One of the best tools is considered to be the application WiFi Analyzer or WiFi Man from Ubiquiti. Once launched, they display not only signal strength but also the technical parameters of the current connection. Pay attention to the "Protocol" or "Standard" line.
The app also works great WiFi ManIt shows the current link speed. If you're connected to a 5 GHz router and see a speed of 433 Mbps or 866 Mbps, then the ac standard (Wi-Fi 5) is enabled. Speeds above 1 Gbps indicate ax (Wi-Fi 6) support.
- 📡 Fing: Shows connection details, including security standard and frequency.
- 📶 Network Analyzer: Provides deep technical information about PHY mode.
- 🔍 WiFi Analyzer (open source): a lightweight, no-nonsense tool for quick testing.
It's important to understand that apps display the current connection. To check the maximum capabilities, you need to connect to the corresponding router. If you only have an old router nearby, the app will only show its capabilities.
☑️ Check via app
Standards and frequency compatibility table
To organize your knowledge, it's helpful to use a summary table. It will help you quickly compare the standard's name with its common name and operating frequencies.
| Technical name | Marketing name | Frequencies | Max. speed (theoret.) |
|---|---|---|---|
| 802.11n | Wi-Fi 4 | 2.4 GHz | up to 600 Mbps |
| 802.11ac | Wi-Fi 5 | 5 GHz | up to 6.9 Gbps |
| 802.11ax | Wi-Fi 6 | 2.4 and 5 GHz | up to 9.6 Gbps |
| 802.11be | Wi-Fi 7 | 2.4, 5, 6 GHz | up to 30 Gbit/s |
The table shows that upgrading to new standards provides a significant performance boost. However, to take advantage of Wi-Fi 6 or 7, you need not only a compatible phone but also a compatible router.
Critically important: having a Wi-Fi 6 module in your smartphone will not provide any speed increase if your router is older (Wi-Fi 4 or 5).Frequently asked questions and connection problems
Users often encounter a situation where their phone "can't see" the 5 GHz network. This doesn't always indicate a malfunction. Perhaps the router's settings have disabled this frequency, or the smartphone is too far from the access point.
The 5 GHz band has less penetration power. Walls and concrete floors block it faster than 2.4 GHz. If the network drops out in the next room, this is a normal physical phenomenon, not a limitation of the standard.
Channel bandwidth is also worth mentioning. Modern smartphones support 80 MHz and even 160 MHz channels. If your router is set to 20 MHz, you won't get high speeds even with Wi-Fi 6. Check the channel bandwidth settings in your router's admin panel.
Why does my phone say 2.4 GHz even though my router is dual-band?
Most likely, the "Smart Connect" feature is enabled, which combines networks. The phone automatically selects the frequency. Try separating the networks in the router settings by giving them different names, for example, Home_24 and Home_5.
Does the case affect Wi-Fi signal reception?
Yes, metal cases or cases with magnetic elements can block the signal. To test the speed, remove the case and move closer to the router.
Is it possible to update the Wi-Fi module in a phone using software?
No, the Wi-Fi module is a hardware component. If your phone doesn't support Wi-Fi 6 natively, no firmware update will add this feature.
How to find out the Wi-Fi version on an iPhone without third-party apps?
Apple doesn't officially display this information in Settings. Please refer to your model: iPhone 11 and later have Wi-Fi 6, iPhone 15 and later have Wi-Fi 6E.