How do I update my iPhone 5s to share iCloud photos?

Your iPhone 5s has already stopped receiving the latest iOS updates a long time ago. Your iPhone was released over 12 years ago by the way. It cannot update past iOS 12.5.7. It should be time to purchase a newer iPhone.

“Sharing iCloud photos: I need update my iPhone 5s”

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Updating an iPhone 5s:

Your iPhone can only go to. iOS 12.5.7. Going to: Settings > General > About, what do you see for the iOS version that is installed?