How to trade in my old iPhone for new one?

When you trade-in your old iPhone and purchase a new iPhone, then you have to take the trade-in value of your old iPhone and the cost of the new iPhone and pay the difference. More information here 👉 Apple Trade In - Apple

Axel F.

Kburleson979 wrote:

Trade in my old iPhone for another new iPhone with out pay for it

Um, no. Apple will give you a trade value for your phone, if it is listed here --> Apple Trade In - Apple

If the phone still has any value, they will deduct that value from the cost of the new iPhone you want to purchase. How you pay for it is up to you. You can pay with cash or credit card. But there is NO WAY you can trade in an iPhone and get a new phone without it costing you anything.