How does it work?
You can now use your M1 mobile number to make a purchase from the App Store or to subscribe to iTunes services and applications. The purchases will be billed to your monthly phone bill.
Step 1: Go to phone settings. Select iTunes & App Stores.
Step 2: Select “View Apple ID”.
Step 3: Sign in with FaceID or enter your Apple ID and password. Select Manage Payments.
Step 4: Select Mobile Phone as your payment type, then click Done.