Can I trade in multiple devices for credit?

Welcome to Apple Support Communities! The answer is Yes! You will have to mail in the iPad before you get the iPhone and then for the iPhone you can trade it in with the iPad or you can do it so they send you your new Phone then you mail your old one back and they will give you a refund for the value of the device.

Links: https://www.apple.com/ca/trade-in/ (Canada)

https://www.apple.com/shop/trade-in (US)

You can find links for other countries by searching Apple trade in ______ *Country you live in*

Cheers!

Yes, you can trade-in multiple devices.

Apple Trade In - Apple