Hey samuelkinslow! If your iPhone is paid in full, then you would only want to trade it in if you're receiving trade-in credit, not for JUMP!. The benefit of JUMP! vs a regular upgrade is that with JUMP!, when you turn in the device you're currently using, the remaining balance of your Equipment Installment Plan (EIP) is forgiven, regardless of what the current trade-in value is for that device. For example, let's say you've had your iPhone 6S for 12 months and you still owe $380 on it, but the standard trade in value is $200. If you have JUMP!, you would turn it in and get a new device and start a new EIP, but that entire remaining $400 EIP balance would be erased. In your case, since the phone's paid off, you can trade it in for credit if you like, or simply keep it and have a super high-quality back-up phone.