If your broadband service is charged to your Verizon phone bill you can enter the telephone number to which the charges are billed. If you have High Speed Internet service you can enter the telephone number on which the service is installed. If you do not have Verizon Voice service you can enter the Dedicated Data Line number associated with your High Speed Internet service. Or, if you have given us your mobile phone number as your contact number you can enter your mobile phone number.