Samsung SM-G390FZKAILO manual Flight mode, NFC and payment, Limiting data usage

Settings

Limiting data usage

Set the device to automatically disable the mobile data connection when the amount of mobile data you have used reaches your specified limit.

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On the Settings screen, tap Connections →Data usage →Billing cycle, and then tap the Data limit switch to activate it.

Tap Data limit, enter the limit, and then tap SET.

Tap Data warning, enter a data usage alert level, and then tap SET. The device will alert you when the warning level is reached.

Flight mode

This 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 can use the device in flight mode if allowed by aircraft personnel.

NFC and payment

Your device allows you to read near field communication (NFC) tags that contain information about products. You can also use this feature to make payments and buy tickets for transportation or events after downloading the required apps.

The device contains a built-in NFC antenna. Handle the device carefully to avoid damaging the NFC antenna.

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