Swap IPhone XS Max

I did read what you said. What do you think an exchange it...? You return the device you don't want, and purchase the one you do want...

You have 14 days from the original date of sale to do that. If it's been longer than 14 days, you can't. If you didn't want the silver one, you shouldn't have purchased it.

If you purchased it directly from Apple, you have 14 days to return it for a refund.