I've been using the App Store through my Apple ID for a while and everything has been normal.
Now, all of the sudden, when I want to update an app or to download a free app after putting my password a pop-up message appears entitled:
asking me to verify my payment info. In my phone's account settings, the payment information is set to NONE since ever, still there's a red message up saying:
You must verify your payment info before you make purchases.
The thing is, I don't have any payment info, that is why I only use free apps. What to do?