Open the Photos app on your iPhone.

Select the photos you want to hide.

Tap the Share icon at the bottom left.

Scroll down and choose "Hide" from the menu.

Confirm by tapping "Hide Photo."

To view hidden photos, go to the Albums tab.

Scroll down and select "Hidden."

Tap the photo you want to unhide.

Tap the Share icon again.

Choose "Unhide" to reveal the photo.

To hide an album, go to the Albums tab.

Swipe left on the album and tap "Hide."