The Gallery app presents all of the pictures and videos stored in your phone, including those you’ve taken with the Camera app and those you downloaded from the web or other locations. When another app saves a picture, it automatically creates a download folder to contain the picture (e.g., capturing a screen shot creates the Screenshot folder).
Tap an album to open it and view its contents.
Tap a picture or video in an album to view it.
Tap the Menu icon (at the upper-right corner of the screen) to open the Options menu to access Cloud, New Album, Delete, Set preferred albums, Show locked files, Settings, and Help.
Tap the Camera icon to return to the Camera app.
Tap the Gallery Menu icon (in the upper-left corner of the screen) to open the Gallery menu to access Albums, Timeline, Videos, Favorites, and Nearby devices.