The iCloud Storage Untangler
The little message that says your storage is full, again, is the most misunderstood thing Apple makes. It usually has nothing to do with your phone being full, and buying a new phone never fixes it. Answer a few questions and get the plain-English reason, and the real fix.
The likely cause
What to do
A NOTE FROM ORDERED
This is the single most common thing people take to a Genius Bar, and it is genuinely fixable in an afternoon once someone explains the parts. If you would rather have it sorted properly, with your photos safe in two places, your plan right-sized, and backups that run on their own, that is the kind of thing we handle as part of looking after a household\u2019s Apple devices, and it tends to stay fixed.
Storage figures and plan names are Apple\u2019s and change over time; treat the guidance as the shape of the fix rather than exact menu names. When in doubt, the safest first move is never to delete, but to make a second copy first.