Xfinity Phone Not Working After New Modem Troubleshooting Steps

If you've just installed a new Xfinity modem and your phone isn't working, don't panic. The first step is to ensure the modem is properly powered on.

Check if the modem's lights are lit up, which indicates it's receiving power. If the lights are off, try plugging it into a different outlet.

Unplug the modem and wait for 30 seconds before plugging it back in. This simple reset often resolves connectivity issues.

Next, check the phone's cord and ensure it's securely connected to both the modem and the phone.

Resetting the modem is a good place to start, but it's not always enough. I've reset the modem many times and unplug and replug the wires, just like @XfinityArmand did.

You might also need to try the standard troubleshooting steps, which include checking the phone and modem for physical damage.

Resetting the modem and checking for physical damage didn't work for @XfinityArmand, so they had a tech come out and set up the modem and network.

If you're still having issues, it might be helpful to refer back to the installation instructions that came with the modem, which might have been more detailed than the app.

The user @XfinityArmand had to have a tech come out to set up the modem and network, which suggests that the issue might be more complex than just a simple reset.

The issue of Xfinity phone not working after a new modem is a frustrating problem that many customers face.

In most cases, the phone service stops working after replacing the rented Xfinity modem with a new one, even if it's a compatible model. This happened to a user who replaced their Xfinity rented modem with a Netgear modem, the exact model recommended by Xfinity.

The problem can occur even if the activation process for the new modem is smooth. A user reported that their Nighthawk CM1150 modem was activated successfully, but their phone service still didn't work.

The phone service may also stop working if the modem is replaced, but the phone number isn't properly registered. This happened to a user who got their Arris modem installed, but their landline phone wasn't activated.

To troubleshoot the issue, users have tried resetting the modem, unplugging and replugging the wires, and performing standard troubleshooting steps. However, these steps didn't resolve the problem for many users.