Hello, and thank you for reaching out. I found some info to share.

 

If your advanced WiFi settings are visible and your channel settings are set to Auto, your Xfinity Gateway will automatically detect and connect devices using the optimal channel to provide the best WiFi signal at any given time. This selection is based on several factors, including:

• The number of other devices currently using a channel.
• The distance from the device to the gateway.
• Whether the device is capable of connecting using 5 GHz.

If you don't see the 2.4 and 5 GHz WiFi channel settings (i.e., WiFi Mode, Channel Selection and Channel Mode), it means that these settings are being managed automatically to help optimize your home network and provide the best performance possible.

 

Based on the below you may not be able to manage the settings at this time. 

 

• xFi Advanced Gateways (XB6 or newer)
  • Most of these gateways have been upgraded with software that manages advanced WiFi settings automatically to help optimize your home network and provide the best performance possible.
  • Advanced WiFi settings for gateways with this software enhancement are not visible and cannot be managed from the Admin Tool or Xfinity xFi.