On a Samsung Galaxy phone or tablet, you can access the search feature by tapping the magnifying glass icon in the top-right corner of the Settings app. Then, all you have to do is type “nfc” in the search field, and, in an .Ensure that wireless communication is enabled on your system. Press the POWER button on the NFC Reader. The power LED will turn on blue. If the battery power is getting low the LED will turn red. Place the Nintendo 3DS NFC Reader/Writer and the handheld system on a flat level .