Message : Required fields Lowest Price Ever for Unlimited Data for New and Existing Customers that Rivals Those Offered by the Nation’s “Big Three” Wireless Providers Later in April Xfinity Mobile Customers Can Get a Free Motorola One 5G Ace When They Add a Line Today, Comcast introduced new 5G unlimited data options for its top-rated mobile service, Xfinity Mobile, that rival those offered by the nation’s “big three” wireless providers at $30 per line for four lines. The service is available to new and existing Xfinity Internet customers and combines the best nationwide cellular 5G with more than 20 million WiFi hotspots to deliver unmatched value and flexibility, and an experience that has received top marks for customer satisfaction from the American Customer Satisfaction Index (ACSI).