Direct Carrier Billing is a service that allows customers to make purchases from different online stores and charge the amount directly to their prepaid balance or postpaid monthly bill.

1. Go to ‘Settings’
2. Tap on your Apple ID
3. Select ‘Payment & Shipping’
4. Tap on ‘Add Payment Method’
5. Select ‘Mobile Phone’
6. Tap ‘Done’
7. Dial *101*70# from your e& number and select a monthly cap limit

Your account will now charge all your purchases in the future to your mobile phone’s bill.

You can set up your account here.