Promotions are limited-time offers that apply only to select devices purchased online at Microsoft Store.
There are a few extra steps to participate in trade-in promotions. During the trade-in process for your used device, answer questions about your new device. If your new device qualifies for a trade-in promotion, you’ll be asked to upload a proof-of purchase.
Your proof of purchase is a PDF version of your order details from Microsoft Store. Once you’ve received a notification that your new device has shipped, follow these steps:
Sign in to your Microsoft account.
Go to Order history.
Locate the order of your new device.
Select Details to view and save the order details as a PDF—this is your proof of purchase.
Go to the Teladvance trade-in page to upload your proof of purchase and get a trade-in value.
For more help, see the proof-of-purchase steps.