Have you noticed that your smartphone connects to Wi-Fi, but the speed is slow? You might be using an outdated frequency. 2.4 GHz, while your router supports a faster range 5 GHz (often referred to as "5G Wi-Fi"). This band not only provides speeds up to 1300 Mbps against 450 Mbps at 2.4 GHz, but is also less susceptible to interference from neighboring networks and household appliances.
In this article, you will learn how to check support 5 GHz on your phone, configure the router to work in this range and connect to it on Android or iPhoneWe'll also cover common issues, such as when the 5 GHz network isn't showing up in the list of available networks or keeps disconnecting. Important: If your phone was released before 2018, it may not support 5GHz - check your model specifications before setting up.
What is 5G Wi-Fi and how is it different from 2.4 GHz?
The term "5G Wi-Fi" is often confused with mobile 5G (fifth generation networks), but these are completely different technologies. 5G Wi-Fi - this is a range 5 GHz in standards Wi-Fi 5 (802.11ac) And Wi-Fi 6 (802.11ax), whereas 2.4 GHz works according to outdated standards 802.11n/g/bMain differences:
- 🚀 Speed: 5 GHz in theory up to 1.3 Gbps (actually 400–800 Mbps), while 2.4 GHz rarely exceeds 150–200 Mbps.
- 📶 Range: 2.4 GHz passes through walls better (up to 50 m indoors), while 5 GHz loses signal at 10–15 m.
- 🔄 Interference: Microwaves, baby monitors, and old routers work on 2.4 GHz, while 5 GHz is almost free.
- 📱 Device support: All smartphones after 2018 support 5 GHz, but budget models may limit the speed.
However, 5 GHz also has its downsides: it's less effective at penetrating obstacles (walls, furniture), and some older devices (such as smart light bulbs or printers) only work on 2.4 GHz. The optimal solution is to use both ranges simultaneously (if the router supports Dual-Band).
How to Check if Your Phone Supports 5GHz
Before setting up, make sure your smartphone is physically capable of operating in the 5 GHz band. Here are some ways to check:
- View model specifications on the manufacturer's website (for example, Samsung Galaxy S23 supports Wi-Fi 6E, A Redmi Note 8 - only Wi-Fi 5).
- Use apps like WiFi Analyzer (Android) or Network Analyzer (iOS) that show available frequencies.
- Go to Wi-Fi settings and look for networks marked
5Gor5GHzin the title (for example,MyWiFi_5G).
If there are no networks marked 5 GHz in the list, this may mean:
- ❌ Your phone does not support 5 GHz (applicable to devices before 2016).
- ❌ The router does not broadcast the 5 GHz network (you need to enable it in the settings).
- ❌ The network is hidden (SSID is not broadcast).
How do I find out my phone model?
On Android: Settings → About phone → ModelOn iPhone: Settings → General → About → Model.
Configuring a router to operate in the 5 GHz band
If your phone supports 5 GHz, but the network is still not listed, the problem may be with the router. Most modern models (TP-Link Archer C6, ASUS RT-AX55, Keenetic Giga) support both bands, but sometimes 5 GHz is disabled by default. To enable it:
- Connect to the router via cable or 2.4 GHz Wi-Fi.
- Open your browser and enter the address
192.168.1.1or192.168.0.1(check the router sticker). - Enter login/password (usually
admin/adminor indicated on the router). - Find the section
Wireless network(orWi-Fi) and select the tab5 GHz. - Make sure the checkbox is checked
Enable wireless broadcastingis worth it, and save the settings.
Recommended parameters for 5 GHz:
| Parameter | Recommended value | Explanation |
|---|---|---|
| Wi-Fi standard | 802.11ac (or 802.11ax for Wi-Fi 6) | Determines the maximum speed |
| Channel width | 80 MHz (or 160 MHz, if supported) | The wider the higher the speed, but the fewer channels |
| Channel | 36–48 or 149–165 (depending on the country) | Avoid channels with interference (check in WiFi Analyzer) |
| Security mode | WPA2-PSK or WPA3-PSK | Don't use outdated WEP |
⚠️ Note: If your router settings don't have a separate tab for 5 GHz, your model may not support this band. Check your router's specifications on the manufacturer's website.
Connecting to 5G Wi-Fi on Android
The instruction is valid for Android 10–14 (On older versions, the menu may differ.) To connect to a 5 GHz network:
Make sure your router is broadcasting a 5GHz network|
Open Settings → Wi-Fi|
Find a network with a label 5G or 5GHz|
Enter password (if required)|
Confirm connection-->
- Open
Settingsand selectWi-Fi. - Make sure the Wi-Fi slider is turned on (blue/green color).
- In the list of networks, find the one that contains
5G,5GHzor has a "⚡" icon (on some phones). - Click on the network, enter the password and connect.
If the 5GHz network is not showing:
- 🔄 Restart your phone and router.
- 📱 Check if power saving mode is enabled (it may turn off Wi-Fi in the background).
- 🛠️ Update your router firmware (in the section
System → Software Update).
Connecting to 5G Wi-Fi on iPhone (iOS)
On iPhone (starting from iPhone 6) Connection to 5 GHz occurs automatically if the network is available. However, manual configuration is sometimes required:
- Open
Settings → Wi-Fi. - Make sure Wi-Fi is turned on (slider is green).
- Find the network marked in the list
5Gor5GHz(on iOS It can be displayed without marks, but at a higher speed). - Click on the network, enter the password and wait for the connection.
If your iPhone doesn't see the 5 GHz network:
- 🔧 Check that the mode is enabled in the router settings
802.11ac(or802.11n/ac/ax). - 📵 Make sure that Airplane Mode or Battery Saver mode is not enabled on your iPhone.
- 🔄 Restart your iPhone and router.
- 📱 Reset network settings:
Settings → General → Transfer or reset iPhone → Reset → Reset Network Settings.
⚠️ Attention: On iPhone 5S and older (before 2014) 5 GHz support is limited or absent. Check compatibility at Apple's official website.
Common problems and their solutions
Even if everything is configured correctly, difficulties may arise. Let's look at the most common ones:
| Problem | Possible cause | Solution |
|---|---|---|
| 5GHz network is not showing | The router doesn't broadcast 5 GHz or the phone doesn't support it. | Check your router settings and phone specifications |
| There is a connection, but the speed is low | Interference, narrow channel, or distance from the router | Change the channel to 36-48 or 149-165, narrow the width to 40 MHz |
| The phone constantly switches to 2.4 GHz | The "Smart Switching" option is enabled | Disable it in your Wi-Fi settings. |
| The 5 GHz network is unstable. | Weak signal due to obstacles | Move your router or use a repeater |
If the problem is not resolved:
- 🔄 Update your router and phone firmware.
- 📡 Check if your router is overheating (this can cause 5 GHz disconnects).
- 🛠️ Reset your router to factory settings (button
Reseton the back panel).
How to improve your 5 GHz signal at home
Due to the way radio waves propagate, the 5 GHz band has difficulty penetrating walls. To improve coverage:
- 📍 Place the router in the center of the apartment, away from metal objects and household appliances.
- 🔄 Use Mesh systems (For example, TP-Link Deco or Google Nest Wi-Fi), if the area of the house is more than 100 m².
- 📶 Set up a repeater, supporting 5 GHz (for example, Xiaomi Wi-Fi Repeater Pro).
- 🔧 Change the channel to a less busy one (check in WiFi Analyzer).
If you live in an apartment building, avoid ducts. 36–48 — they're most often used by neighbors. Optimal channels for 5 GHz in the city: 149–165 (if they are allowed in your country).
FAQ: Frequently Asked Questions about 5G Wi-Fi
My phone can't see the 5 GHz network, even though the router is broadcasting it. What's wrong?
Possible reasons:
- The phone does not support 5GHz (check model specifications).
- The mode is enabled in the router settings
802.11b/g/n(2.4 GHz only) Switch to802.11a/n/acor802.11ax. - The network is hidden (SSID is not broadcast). Enable broadcasting in your router settings.
How do I know which band (2.4 or 5 GHz) my phone is connected to?
On Android:
- Install the application WiFi Analyzer - it will show the connection frequency.
- Or go to
Settings → Wi-Fi, click on your network and see the speed: if more 300 Mbps, most likely it is 5 GHz.
On iPhone:
- Open
Settings → Wi-Fi, click the "i" icon next to the network. If the "IPv4" line shows a higher speed 200 Mbps, this is 5 GHz.
Is it possible to use 2.4 and 5 GHz at the same time on one router?
Yes, if your router supports it. Dual-BandIn this case:
- Both networks will be broadcast in parallel (for example,
MyWiFi_2.4GAndMyWiFi_5G). - You can connect different devices to different bands (for example, a smartphone to 5 GHz and a smart bulb to 2.4 GHz).
To enable both bands, go to your router settings and enable broadcasting for 2.4 GHz and 5 GHz separately.
Why is the speed on 5 GHz lower than on cable?
Even under ideal conditions, Wi-Fi is slower than a wired connection due to:
- Interference from other networks.
- Limitations of the standard (for example, Wi-Fi 5 maximum 1.3 Gbps, A Wi-Fi 6 — to 9.6 Gbps, but the actual speed is lower).
- Distance to the router (the further, the lower the speed).
To improve speed:
- Use channel width
80 MHzor160 MHz. - Connect to the router at a distance of no more than 5 meters.
- Update your router to Wi-Fi 6 (if the phone supports it).
Is 5 GHz safe for health?
The 5 GHz band, like 2.4 GHz, is non-ionizing radiation, which does not pose a health hazard under standard use. The radiation power of a Wi-Fi router is hundreds of times lower than the maximum permissible limits (according to WHO And Federal Communications Commission of the United States).
If you are concerned about the effects:
- Turn off Wi-Fi at night.
- Place the router away from areas where you will spend a lot of time (for example, not next to your bed).
- Use a wired connection where possible.