The Gallery is where you can access your gallery of stored camera images. You can view your photos in a slideshow, create a collage, share your photos and videos with your friends, as well as manage them (delete, edit, etc.). You can access your photos and videos stored in your phone's internal memory, microSD card (external memory), or albums connected with your Google Account.
Tap the Home Button > the Apps icon > Gallery .
Swipe up or down to view more albums.
Tap the Gallery Menu icon (at the upper-left corner of the screen) to access Albums, Timeline, Videos, Memories, Favorites, and Nearby devices to view your images and videos.
Tap an album to open it and view its contents. (The pictures and videos in the album are displayed in chronological order.)
Tap an image to view it. Then you can swipe horizontally to browse through your images. While viewing a photo, tap it to display (or hide) the screen icons.