Learn how to connect to NFC on the Google Nexus 4. Read NFC tag To read the NFC tag information from another NFC device or a printed tag, follow these steps: Gently place the back of your device against the NFC antenna location on the other device or against the printed tag. When your phone has successfully read the tag, it will play a notification sound. The content will display on your screen. Turn on / off NFC To turn on or turn off NFC, follow these steps: From any Home screen, tap the All apps Tap Settings. Under Wireless and network, tap More. Tap the NFC slider to turn on NFC.