No, because when you bought you phone, you signed a 2 year contract, right?
Now, they have device payment plans, or DPPs. They take the full retail price of the phone and split it up over 24 bill cycles. So 24 payments. Makes the cost of a new $800+ smart phone like $30+ a month or whatever.
You can still get the phone subsidized down to $200-$300 if you want to sign a 2 year deal, however nearly every single deal they have out there that comes along excludes any of the people in those contracts.
What I did a couple months back was trade in my Note 5 to Verizon for $300, and applied that money towards the purchase price of the Note 7. So then they took that final price, and split it up over 24 months. Dropped the montly payments from $33 or $38? forget exactly, down to $23.50 a month.
And Samsung and Apple, as mentioned, both have a plan right now that if you have paid off more than 50% of your device you can just straight swap it for a new one. You get no trade in value, but you just start paying on the new device, at whatever that device new DPP is. Downside to this, is you don't get to use any trade in value anymore unless you wait the 2 years to pay off your device. The upside is, you can get a new phone every year, and not have to pay off your old phone first.