You can tag photos on your iPhone with the names of people and pets to easily find pictures of them later.The Photos app automatically detects people in pictures, and you can fine-tune the results by adding names.Tagging photos helps organize your photo library, making it easier to locate specific images.In the People & Pets section of the Photos app, you can identify and tag family members and pets.You can merge two sets of photos of the same person to clean up your photo tags.The Photos app scans your library to tag names to photos, but you can review and confirm them manually.Manually tagging photos with faces on the iPhone is easy by tapping on a face and adding a name.You can quickly find pictures of specific people or pets using the smart search feature in the Photos app.Grouping people together allows you to create sets of photos of couples, families, or pets.You can pin pictures of a person or group to the Pinned Collections view for easy access.