How do I change the wireless channel on a Zyxel VMG 3925 router?

Your router can broadcast on different wireless channels. If your neighbour's router is using the same channel as you, this can interfere with your signal and cause some problems.

Changing the wireless channel on your router may help improve your wireless connection. For more tips on getting the best out of your connection, see our guide.

Something you need to know about your router

Your Zyxel router is dual band which means that it two wireless frequencies for your devices to connect to: 2.4GHz and 5GHz.

You can tell which is which by looking at the name. The 2.4G network has the regular wireless network name and the 5G network has 5G on the end of it. Here's an example:

We strongly recommend connecting to the 5G network where possible as this provides a stronger signal and you're less likely to have issues.

If you can't connect to the 5G network on your devices, or you're too far away from the router, you can connect to the regular wireless network.

Changing the channel for 2.4GHz or 5GHz

You can change the channel for both the 2.4GHz and 5GHz networks on this router. However, you should only change the channel for the network that you're having trouble with (e.g: if devices connected to 2.4G are disconnecting, but devices connecting to 5G aren't).

1. Connect a device to your Zyxel router using an Ethernet cable (recommended) or Wi-Fi.
   
   
    
2. Open a new web browser and type 192.168.1.1 into your address bar and press enter or go
   
   
    
3. You now need to login with your username and password. The username will be admin and the password will be 1234, unless you have changed it yourself.
   
   Now select Login.
    

   Password not working?

   If the password doesn't work, you may need to factory reset your router.
   
   To factory reset the router, find a pin and push it into the 'Reset' hole on the back of the router for 10 seconds. After a few minutes when your router has turned back on, go back to Step 1.

   
   
    
4. Now you're logged into the router, select Network Settings at the bottom of the page and then select Wireless.
   
   
    
5. First, look for the setting labelled Band. Change this to the network that you want to change - either 2.4GHz or 5GHz.
   
   Now look for the setting labelled Channel.
    

   • I'm changing the channel for 2.4GHz

     This will usually be set to auto as your router will try to automatically switch to a channel with less interference.
     
     Your Wi-Fi can be affected by other routers working on the same frequency, so we'd recommend trying channels 1, 6 or 11 to begin with.
     
     If you continue to have problems, work your way through the channels one by one. A lot of devices (especially in the UK) don't work with channels 12 and 13 so it might be worth skipping those channels.
     
     Please bear in mind that you may not notice an immediate difference and so you may need to try each channel for at least 15-20 minutes. It's also worth noting that the Speed value will change depending on the quality of the signal being broadcast by your router.
      

   • I'm changing the channel for 5GHz

     This will usually be set to auto as your router will try to automatically switch to a channel with less interference. You can change the channel number, going upwards in fours from 36 (40, 44, 48, etc).
     
     Your Wi-Fi can be affected by other routers working on the same frequency, so we recommend working your way through the channels one by one. Some devices don't work with higher channel numbers (50 or above), so bear that in mind when you're changing channels.
     
     5GHz isn't as congested as 2.4GHz, so it's usually easier to find a channel that works - however the range of 5GHz doesn't extend as far as 2.4GHz.
     
     Please bear in mind that you may not notice an immediate difference and so you may need to try each channel for at least 15-20 minutes. It's also worth noting that the Speed value will change depending on the quality of the signal being broadcast by your router.
      
   
    
6. Once you've chosen a band and channel number, scroll to the bottom of the page and select Apply to save your changes.
   
   To see if your wireless connection is now working, use the internet as you normally would. If you find you're still having the occasional issue, you may need to change your channel again.
    

   Something to note

   You may not notice an immediate difference and so you may need to try each channel for at least 15-20 minutes.