iPhone out of storage space despite "Optimize iPhone Storage" enabled in Photos
Contradicting this article claiming
... as long as you have enough space in iCloud, you can store as many photos and videos as you want.
my iPhone keeps complaining about low (or sometimes being completely out of) storage space. I've been fixing it by selectively offloading or removing apps & data, but the quote above seems be at odds with the 3Gb that Photos are taking on my device. The setting is definitely doing something, since the full size of my iCloud Photos is about 12Gb, but I'd think a 75% reduction is a very far cry from "as many photos and videos as you want".
With the setting enabled, the system is supposed to manage what photos on the device are replaced with thumbnails & their originals downloaded only on demand, but 3Gb seems an awful lot for a bunch of low resolution thumbnails & metadata. Am I missing something (e.g., maybe the setting needs to be applied separately to different types of media, or maybe another setting controls how aggressively the feature works), or is that how low it will go?
iPhone XS, iOS 13