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Xfinity Mobile: Requires residential post-pay Xfinity Internet. Line limitations may apply. Equip., intl. and roaming charges, taxes and fees, including reg. recovery fees, and other charges extra, and subj. to change. $25/line/mo. charge applies if Xfinity TV, Internet or Voice post-pay services not maintained. Pricing subject to change.

Automatic backup – keeps your internet on if the power goes out; No data caps; Free cybersecurity; Xfinity Gateway – an all-in-one router and modem; Dynamic IP; Fast, professional installation; 30-day money back guarantee; Comcast Business and Xfinity are two separate services. What you often hear about Comcast stems from residential customers.

Download speed: The speed at which your device pulls data from the internet. Usually measured in Mbps or Gbps. Upload speed: The speed at which your device sends data to the internet. Usually measured in Mbps or Gbps. Latency (Ping): The time (measured in milliseconds) it takes for a signal to travel from your device to an internet server and ...

Get in touch with Comcast Business. Access convenient online chat, browse our forums, or ask the experts in the Comcast Business support community. Contact Customer Service at (800) 391-3000.