How do I redeem my iTunes gift card on my iPhone?

hi kenneth.
this is all i could find.
Apple Store Gift Cards can be redeemed for most items on Apple.com, includingiPhone, iPhone accessories, and all things Mac, iPad, and iPod touch. Note: AppleStore Gift Cards cannot be used to purchase another Apple Store Gift Card, aniTunes Gift Card, Apple Print Products, or for purchases at the iTunes Store.

Gifting - Shopping Help - Apple

Can buy an iPhone with my apple iTunes cards Google Search

not sure if this link will help you out.
Redeem my itunes gift card on amazon Google Search

Hi There,

Apple have a page setup for answering this very question:
Redeem and use iTunes Gift Cards and content codes

The basic process is to Open the iTunes Store, App Store or iBooks Store then scroll to the bottom of the 'Featured' section. There you will find a Redeem button. With this you can even use your camera to scan the barcode or enter the code manually. If successful you will see the updated balance at the bottom of your 'Featured' page under your Apple ID. If it was for content then it will start downloading.

Hope you find what you were looking for.

All the best

-Click sign in. Sign up if you don't have an account
-Select my gifts from my stuff drop down menu on right hand side of this page
-Click redeem a gift card and enter code on your groupon gift card

you need to buy an apple itunes voucher in a shop or online to load your apple ID account.
If you already have an Apple ID that you use with the iTunes Store, App Store, iBooks Store, or Mac App Store, you can redeem your gift card without using a credit card.
Redeem your code on iPhone, iPad, or iPod touch

1. Tap iTunes Store, App Store, or iBooks Store on your device.
2. Scroll to the bottom of the Featured section and tap Redeem. You will need to sign in with your Apple ID.
3. Tap "You can also enter your code manually."

Apple and iTunes Gift Cards Apple Store
Redeeming iTunes Gift Cards and content codes

I suggest installing iTunes on a computer that you own, log-in with your Apple ID and then try to redeem the gift card.

If you don't already have an Apple ID, then this is probably the problem. You can create an Apple ID using iTunes.

You can download iTunes to your computer from this link (click here).

Follow the directions on the page to download and install iTunes to your computer.

Good Luck and let us know how this turns-out.

Hi,

Ive popped below how to redeem on you phone, hope this helps!

( Please Leave Feedback For Help Provided )

1. Open the iTunes or App Store on your iPhone
   
2. Tap Music from the bottom navigation bar if you're in the iTunes Store, then scroll to the bottom of the page. If you're using the App Store, tap Featured from the bottom navigation bar and scroll to the bottom of the page.
3. Tap Redeem.
4. In the text box, enter your redemption code exactly as it appears on the back of the iTunes Gift Card.
5. When done, tap Redeem.
6. 
   
7. If you are not already signed in, you will be prompted to do so after tapping Redeem. Once you have successfully redeemed your iTunes Gift Card, you will see the following Thank You page.
8. 

Great! You can redeem your credits either through your computer (itunes) or through your iPhone, iPad or iPod touch. For detailed step by step instructions on how to redeem visit this link http://support.apple.com/kb/ht1574

what gift card and where need alot mor info than provided

In order to fix this problem, go to billing info, and when it lets you choose the credit card method, choose the option "none" then it will let you use your gift card. Otherwise it assumes you want to use a credit card. Hope this helps.