Final answer:
XFINITY Voice Unlimited Saver allows unlimited long-distance calls within the United States, including all 50 states and Washington D.C., as well as Canada, Puerto Rico, and U.S. territories.
Step-by-step explanation:
With XFINITY Voice Unlimited Saver, you are able to make long-distance calls within the United States, which includes all 50 states and the District of Columbia, as well as Canada, Puerto Rico, and other U.S. territories. This plan typically allows for unlimited calling to these locations, hence the name "Unlimited". However, it is important to note that the specifics of this service can change, and you should check with Comcast or the XFINITY website for the most current information regarding international calling and any potential additional charges that may apply.