I upgraded my iCloud storage from 64gb to 200gb but it still says 64gb on my iPhone.

Renting iCloud storage does not add storage space to an iPhone.

The phone can never have more storage space than it had at the manufacture date.

What's the difference between device storage and iCloud storage? - Apple Support (CA)

Hello ~ Take a look here as it explains the difference between iPhone device storage and iCloud storage. It also has helped advise for improving your device storage.

What's the difference between device storage and iCloud ...

~Katana-San~

iCloud storage is separate from that inside the iPhone. If you need more space on it, delete or offload content.

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