Samsung Galaxy S4 User Manual page 21

Note: If the charger is incorrectly connected, damage to the
accessory port will occur therefore voiding the phone's
warranty.
5. When charging is finished, first unplug the charger's
power plug from the AC wall outlet, then disconnect
the charger's connector from the phone.
Important! If your handset has a touch screen display, please
note that a touch screen responds best to a light
touch from the pad of your finger or a non-metallic
stylus. Using excessive force or a metallic object
when pressing on the touch screen may damage
the tempered glass surface and void the warranty.
For more information, refer to "Standard Limited
Warranty" on page 340.
Getting Started 14