When you received a App Store & iTunes Gift Card or code from your family and friends, you can redeem the Gift Card, so the amount on the card credits to your Apple ID and then use the credit to buy music, movies, TV shows, apps, books, audiobooks and more in the iTunes Store, App Store, or iBooks Store. When you redeem a content or promo code, the item associated with the code will be downloaded to your device automatically.
You can redeem a gift card or code in iTunes Store, App Store, or iBooks Store on iPhone or iPad. In this quick guide, we will show you how to redeem a gift card or code with the App Store on iPhone 8 which is running on iOS 11. It works almost the same with other iPhone iPad models or iOS versions, such as iPhone 6, iPhone 7, iOS 9, iOS 10, etc.
Redeem gift cards and promo codes in App Store
Open the App Store on your iPhone. The Today tab should open automatically. At the top right corner, tap your Apple ID icon, then select Redeem Gift Card or Code.
Sign in with your Apple ID and password if needed. You will then see a screen like this.
There are two ways you can redeem your gift card or code, use the camera on your iPhone or manually enter your code. After that, your balance should instantly reflect the gift card or the item associated with the code download to your device.
Redeem a gift card or code in iTunes Store, iBooks Store
Launch the iTunes Store, in the Music, Movies or TV Shows tab, scroll down to the bottom, tap Redeem and follow on-screen tips to redeem a gift card or code in iTunes Store on iPhone iPad. Run iBooks app on your device, switch to the Featured tab, then scroll down to the bottom to find and tap Redeem option and begin to redeem gift cards or promo codes.