Change of billing address
I moved from US to Switzerland. How do I change my billing address in my account please?
iPad
iTunes Store: Changing Account Information - http://support.apple.com/kb/HT1918
App Store Frequently Asked Questions (FAQ) - http://support.apple.com/kb/HT2001 when using iTunes --> "To change countries, scroll to the end of the iTunes Store home page and click the flag indicating the current country. To choose a different country, click the appropriate flag."
iOS: Changing the signed-in iTunes Store account - http://support.apple.com/kb/HT1311 - Change your iTunes Store country: "Sign in to the account for the iTunes Store region you'd like to use. Tap Settings > iTunes & App Stores > Apple ID: > View Apple ID > Country/Region."