Without trying to get too personal and/or offending you...this isn't really the appropriate forum for this query. Check the services section on Verizon's site and see if they offer anything like that.It's likely whatever you are looking for will cost extra though...I would insist on meeting your teens friends' parents, getting their phone numbers directly, setting up and enforcing rules with your kids regarding you calling and them answering when not at home. This sort of technology is new and the type of parenting you are inquiring about isn't new and has been done effectively without technology for years. It just requires some diligence and honest discourse with your kids. I hope that last part didn't offend, but if you don't want to fork up the cash for tracking services, you're going to have to make up for it with extra effort.  Good luck. Teens are a handful.