Low storage phones and the app wall

A low-storage phone case for receipts and service links.

On the ground, the app wall breaks in very boring ways: the phone has 600 MB free, Play Store updates are pending, and the person only needs a receipt or service ticket. I don't think every product needs a rich mobile site. But after payment or booking, the web link should still show the document. Otherwise support starts blaming the user for a storage problem the service created.