Wifi goes down when cordless landline phone rings

Hello, @Silverwood1! We know how important is it to have reliable Wi-Fi while using your phone. 

Is your cordless phone connected to an electric outlet that is near the Wi-Fi gateway? We want to know, so we can determine if that is what could be causing the interference.

What service is your landline? Is it VOIP or is it plain old telephone service? That way we will be able to take a deeper dive into this issue.

We recommend checking out this article on proper modem environment, this may improve your Wi-Fi experience. 

• The modem/gateway should be placed 3-4 feet away from electronic devices
• Moving the modem off the floor and placing it on a hard surface
• Plugging U-verse equipment into a wall outlet
• Having the modem out in the open for proper air circulation

You may also reboot your Wi-Fi gateway manually to improve the Wi-Fi service. 

 Unplug the power cord from the back of your gateway or modem. If you have: 

• An internal battery backup, remove it
• DSL, unplug the phone cord from your modem or gateway

• Wait 20 seconds.

   

   

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  Plug the internal battery back in if you have one.

•  

  Wait for the gateway or modem to restart and your Broadband light to turn solid green. This can take up to 10 minutes. 

Please let us know if this helps.

Faith, AT&T Community Specialist

Faith, thanks for your help.

Unfortunately, the only place I can keep my modem happens to be near my cordless landline phone and answering machine. There are not other options because of the way it was set up. I have plain old landline service. I've tried rebooting, got the same problem minutes later. Maybe it's just something I'll have to live with?

Thank you for that update, @Silverwood1!

Since this is still happening, let's move this conversation into a direct message. This way we can run tests on our end to see if we can find the cause to your concern. Be on the lookout for a chat icon in the upper right-hand portion of the page, next to the bell icon.

In the meantime, can you let us know if this is DSL or U-Verse internet? Depending on which service it is, will alter the way we approach this.

We look forward to speaking with you!

CalebP, AT&T Community Specialist 

It is AT&T wifi, not DSl.

I suspect your using a phone with DECA6 causing interference on the 2.4Ghz band. When using the phone it is causing interference with the gateway.

Recommend purchasing an in expensive hardwired handset plug in removing the wireless phone system.

Then try calling in/out to your number.

If the internet stays up the issue is your phone.

Then up to you which phone system you want to purchase to replace the one causing the interference or find a way to move the two devices several feet apart… could purchase a 25 ft phone cord as an example.

Just my thoughts