To connect to a hotspot, your mobile device  whether it be a smartphone, tablet or laptop computer  will find the network, which will be labeled either "xfinitywifi" or "cablewifi." When you call up your browser, it will automatically take you to an Xfinity portal where you type in your Xfinity login and password that was created when you became a home Internet subscriber. Once in, you can surf the Internet or stream video and music at speeds of up to about 15 megabits per second, similar to the average speed of Xfinity's home broadband service.