I did the trade in when I got my S10+, I traded my Note 8. Make sure you use the smart switch to get all your apps, settings, pics etc transferred to new phone. You have to do a factory reset on the old phone before you send it back. Make sure it's powered off. If you still have the original box for your old phone I would put it back in there and send it like that, because that will keep the phone more protected from damage. You print the return label and use same box that your Note 10 came in to return, you just have to cross out or cover the old shipping label. I had to take mine to a FedEx shipping center to send back, not sure if you have to do the same thing, but keep the shipping receipt they give you to track the order to make sure Samsung received it.