I want to change my credit card

You need to update it in iTunes. Log on to iTunes on your Computer, go to the Store, and click on the Account quick link on the right. Once in your account, update your Credit Card info.

Cheers,

GB

How do I change my credit card information for my I Cloud storage and my App Store in I phone and I Pad

Click on Settings>iTunes & App Store>click on your Apple ID and type in the password>Select View account>Select Payment Information.

Once you change it on one of your iOS devices, you don't need to do it anywhere else.

Cheers,

GB