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Visitor

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3 Messages

Saturday, July 12th, 2025 2:03 PM

How do I activate my xFi Gateway without the use of the App?

My old modem died, so I went to the Xfinity store and got a new xFi Gateway. My phone is no longer compatible with the Xfinity app, so I can't use the app to activate the modem. 

I tried to call XFINITY customer service at 1-855-OK-BEGIN (1-855-652-3446) and 1-800-XFINITY (1-800-934-6489). But it was automated messages.
My new modem is plugged in and ready, but it said "I don't see any new devices on your account."  -- however I have a new modem directly from Xfinity. I got stuck in a loop of it telling me to download the app, then not understanding that I need another way to get this activated. 

Is there any other number I can call to activate it? 

Expert

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111.6K Messages

1 hour ago

Try calling 1-855-652-3446. That is their self-install device activation line. Have the RF / CM / HFC MAC address and the serial number of it handy when you call. Good luck !

Visitor

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3 Messages

I did call that number first, but the automated assistant said  "I don't see any new devices on your account." 
That's weird because I am literally looking at the new xFi modem, which I picked up in person at an xfinity storefront. 

Expert

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111.6K Messages

49 minutes ago

Ok, is the indicator light blinking, or is it lit white steadily ?

Visitor

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3 Messages

It's white and steady. I even got the automated assistant to perform a remote restart on it so I know the system must be able to see it and interact with it.

But I've called both support numbers and they just say "you don't have any new devices on the account." I can connect to the wifi, follow prompts to activate it but of course -- it just says download the app. 

Expert

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111.6K Messages

33 minutes ago

Ok so that shows that it's online and the system and reps should be able to see it. I'm going to escalate your issue to the Comcast corporate employees (The Digital Care Team) who are available to these boards. They will be able to assist you with this. You should get a reply here in your topic. Good luck !

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