A:AnswerNo. If you paid off, the phone is yours, you can request AT&T to unlock your phone, you are also eligible to upgrade, while keeping this phone with you
A:AnswerIt does not, in order to qualify for 24-month installment billing the phone must be on a postpaid plan. You can still finance the phone through the Best Buy credit card for 12 months interest free but the phone must be purchased outright to use on the prepaid network.