The Gallery app presents the pictures and videos saved 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, Hide/Show album, Settings, and Help.
Tap the Camera icon (at the top of the screen) to return to the Camera app.
Tap Albums (in the upper-left corner of the screen) to open the Gallery album menu to access Albums, Favorites, Videos, All files, Picasa, and Nearby devices.