Using Apple Trade In - Apple I can see my current phone, Google Pixel 10 Pro XL, listed and see it's estimated value. However when I selected the phone I want to trade in for, iPhone 18, and get to the part of the page where I need to pick my phone I want to trade in the Google Pixel 10 Pro XL isn't listed there.
Why is there a discrepancy between devices to trade in on the Trade In page and the specific iPhone trade in form?