Settings138Limiting data usageSet the device to automatically disable the mobile data connection when the amount ofmobile data you have used reaches your specified limit.1 On the Settings screen, tap Connections → Data usage → Billing cycle, and then tapthe Apply data usage limit switch to activate it.2 Tap Data usage limit, enter the limit, and then tap SET.3 Tap Data usage warning, enter a data usage alert level, and then tap SET.The device will alert you when the warning level is reached.Flight modeThis disables all wireless functions on your device. You can use only non-network services.On the Settings screen, tap Connections and tap the Flight mode switch to activate it.Make sure the device is turned off during takeoff and landing. After takeoff, you canuse the device in flight mode if allowed by aircraft personnel.NFC and paymentYour device allows you to read near field communication (NFC) tags that contain informationabout products. You can also use this feature to make payments and buy tickets fortransportation or events after downloading the required apps.The device contains a built-in NFC antenna. Handle the device carefully to avoiddamaging the NFC antenna.Using the NFC featureUse the NFC feature to send images or contacts to other devices, and read productinformation from NFC tags.1 On the Settings screen, tap Connections and tap the NFC and payment switch toactivate it.