Being Charged to Download Apps
How do I update & download apps & why am I being asked for a payment?
iPhone 11, iOS 15
Question marked as
Top-ranking reply
You may need to have a payment method on file, even if the app you want to download is free.
If you can't make purchases or update apps, including free apps, you need to update your payment method or add a new one.
See also -> Payment methods you can use with your Apple ID
Payment methods you can use with your Apple ID – Apple Support (UK)
You can also use your Apple ID balance as payment method: Add money to your Apple ID balance