XFINITY Mobile is primarily designed for existing XFINITY Internet customers, as it allows them to take advantage of both their Internet and mobile services under one billing account. However, customers who do not have XFINITY Internet may not be able to access XFINITY Mobile services. This setup encourages users to combine their services, offering potential savings and streamlined management. If you are considering XFINITY Mobile and do not have XFINITY Internet, it might be beneficial to explore the options for acquiring Internet service first to gain access to mobile services. Those interested should check the official XFINITY Mobile website for the most accurate information on eligibility and service offerings, as there may be promotions or changes.