In October 2015, Apple began rolling out support for carrier billing on iTunes in select markets, starting with Germany. This feature joins the existing payment methods accepted on the App Store, iTunes Store and iBooks Store and permits customers to have apps and media bought through these content stores charged to their monthly mobile phone bill or deducted from their prepaid amount.
If your carrier supports it, you too can opt-in to pay for your iTunes Store, App Store, and iBooks Store purchases—and your Apple Music membership—through mobile phone billing.
In this tutorial, we're going to cover setting up mobile phone billing as your payment method in the iTunes Store, App Store or iBooks Store.