You can download free apps, but you may need to have a valid payment method on file, even if the app you want to download is free.
Free apps has also In-app pruchase.
See -> Buy additional app features with in-app purchases and subscriptions
Buy additional app features with in-app purchases and subscriptions
Tap Continue and sign in to view ‘your’ billing information.
To verify your payment information, you need to Sign in to your Apple ID account page and edit / update your Apple ID details -> https://appleid.apple.com
- On the Sidebar click Payment methods -> then tap Payments Methods and tap Manage payment method.
See the following Apple articles:
If you can’t download or update apps on your iPhone or iPad
If you can’t download or update apps on your iPhone or iPad – Apple Support (UK)
scroll to point 2 & 3 ⤵️
Add a payment method
You may need to have a valid payment method on file, even if the app you want to download is free.
Add a payment method
Resolve a problem with your payment method
If your payment method has expired, declined or failed, or a message says "There is a Billing Problem with a Previous Purchase"
Payment methods you can use with your Apple ID
Payment methods you can use with your Apple ID – Apple Support (UK)
fyi: Not all credit & debit cards seem to work with App Store / iTunes Store, try a different one, or preferably a credit card. If your card is not accepted as a paymenf method, you need to contact your bank.
If you still need help, get support from Apple directly -> Get Support or call Apple in your region see -> Contact Apple for support and service or check -> here for more support and assistance.