If you want to use NFC (Near Field Communication), you need to turn on NFC. Follow these easy instructions.
Turn NFC on or off
Slide your finger down the display starting from the top edge of your mobile phone.
Tap the settings icon.
Tap NFC and sharing.
Return to the home screen
Tap the indicator next to "NFC" to turn the function on or off.
Tap the Home key to return to the home screen.
*Please refer to the Samsung website for more information or further support.*