Did you try (temporarily) off iCloud in photos? On one iphone, 85G was Other (<3G remaining free) until we turned off the iCloud stuff in Settings→Photos. Seems

Did you try (temporarily) off iCloud in photos? On one iphone, 85G was Other (<3G remaining free) until we turned off the iCloud stuff in Settings→Photos. Seems like some bug, since the iCloud account was capped at 50G and the feature was supposed to store "smaller versions" of the full size stuff in the cloud …