Activate iTunes cards for Christmas
How to activate your iTunes card you just got for Christmas
iPhone 6s, iOS 12
Question marked as
This article explains the different kinds of cards Apple uses and has links on how to redeem them and what can be purchased with each kind. Click here --> What type of gift card do I have? - https://support.apple.com/HT204199
If you really mean they are not activated: If you can't redeem your App Store & iTunes Gift Card, Apple Music Gift Card, or content code - Take the cards back to the store with the receipt and ask them to activate them.