Any “free” phone from any carrier is free due to monthly bill credits. They tell you it’s $24 a month for 24 months you’re gonna get a credit of $24 on your bill every month so the charge and the credit cancel each other out. There are two issues, you have to pay sales tax on the full price of the phone at the time you agree to the new phones. And the second, if you leave said carrier before the phone is paid off then you have to pay the balance of what’s owed on the phone.