for iOS 9.1 software

Tap Photos to see all your still photos, Live Photos, and videos,
organized by Years, Collections, and Moments. To quickly browse
the photos in a collection or year, touch and hold for a moment, then
drag. See .
Tap Shared to see photos and videos you shared with others or that
others shared with you. See .
Tap Albums to see how photos and videos are organized by albums.
See .
View all your photos and videos. By default, Photos displays a
representative subset of your photos when you view by year or by
collection. To see all your photos and videos, go to Settings > Photos &
Camera, then turn off Summarize Photos.
Browse through your photos and videos. While viewing a photo, swipe
the thumbnails to browse through your other photos. Tap a thumbnail to
view a photo. Drag the photo down to go back to thumbnail view.
Use Live Photos
iCloud Photo Sharing
Organize photos and videos