If you experience no signal, verify that all coaxial connections are tight and that the splitter is securely attached to the wall outlet. You typically receive a modem, a router (often combined into one gateway device), and a coaxial cable that connects to the wall outlet in your home.
Troubleshoot Xfinity TV Signal Issues
Securing a strong signal from the outset prevents a multitude of issues down the line, so taking the time to position your equipment correctly is essential for optimal performance. You will need to have the Xfinity app installed on a smartphone or tablet, both connected to the same home Wi-Fi network.
Once the activation is complete, your service will be provisioned, and you will gain access to the full channel lineup. You will typically be prompted to enter a unique identifier, such as the serial number found on the back of your gateway.
Troubleshoot Xfinity TV Signal and No Signal Issues
Activating Your Service Even with the cables connected, your Xfinity service may require activation before you can watch Xfinity on TV. Change your TV's input source to match the port number.
More About How to watch xfinity on tv
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