Would like to know if it’s possible for the responsible party to not have a phone with Verizon.
Whoever has their SSN attached to the account is financially responsible regardless if they have an active line or not.
It's always our priority that we clarify all your concerns regarding the lines on your account. Regarding your question, it is not necessary that the account holder uses one of the lines on your account. Could you please provide us with more details about your current situation?