The Samsung Galaxy S4 user's manual is available online for free. To access the manual online go to and click "Owners & Support" on the menu bar located on the top of the page, followed by "Manuals & Downloads." Continue by following the instructions provided.

In order to read the manual, you may need to install a PDF reader. The most popular PDF reader is Adobe Acrobat, which is available for free online. To download Adobe Acrobat Reader, go to and then follow the instructions provided. If you need additional help with your Galaxy S4, you can contact Samsung directly.