Visible

Take it out and hold onto it. You might not need it assuming your new phone is eSIM, but at least you have it. They dont need it.

They have a device trade in program, "sell" them your old phone and buy your new phone https://www.visible.com/deals/trade-in

Also, after you generate your Trade-In order (when you complete the purchase of your new phone), the shipping label should become available when you log into your Visible account, up until the label is scanned by USPS

A bit late to this but looks like they removed colors to make it simpler, if you havent traded in yet, give it another shot.