[header] How to hide pictures on galaxy s4 [title] Download a file manager app. [step] The most popular free file manager is " es file explorer ". This app will allow you to manipulate the files stored on your device, without needing to connect the s4 to a computer. 
[title] Navigate to the picture you want to hide. [step] Pictures that you've taken are typically in the " dcim " folder, while pictures that you've downloaded can usually be found in the " downloads " or " pictures " folders.