A:AnswerThe amt of cash you'll have to pay depends on the phone price and and the plan you choose. You can call ATT they'll figure it out for you.
I hope I answer the question to the best of my ability.
A:AnswerThere was no down payment since I was having it activated through my service.
You probably would only have a down payment if you were buying the unlocked phone outright and financing it through your Best Buy account
A:Answeryes we had to drop old phone off to the post office for trade in, easy they gave us the return paperwork just had to put in box put on lable and ship. (do the post office so you can get a tracking number so carrier cant say you didn't send it back)