XFINITY questions why people pay for a separate mobile phone service when they already pay for internet. Shouldn't it all be one thing? Unlike other plans, XFINITY Mobile is included with your XFINITY Internet service. With up to five lines of unlimited talk and text included with your internet, all you have to pay for is mobile data. For a limited time, eligible customers can receive a $150 prepaid card with the purchase of an LG X Charge.