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incurring significant charges for data use on local operator mobile networks, particularly if
you do not have a mobile data agreement.
Carrier
Display Carrier when SIM card is inserted.
International data roaming
If you not need to transmit data on other operators’ mobile networks, disable Data roaming
to avoid incurring significant roaming charges.
APN Settings
If the default APN is hidden, adding a new APN is forbidden. Therefore, greyed out the item
on the APN Settings screen. If the default APN is visible, then the user can add a new APN.
After the new APN is added, it should not automatically connect to the new one.
14.1.3 Wi-Fi
Using Wi-Fi you can surf the Internet without using your SIM card whenever you are in
range of a wireless network. The only thing you have to do is to enter the Wi-Fi screen and
configure an access point to connect your phone to the wireless network, enter password if
applicable.
14.1.4 Bluetooth
Bluetooth allows your phone to exchange data (videos, images, music, etc.) within a small
range with another Bluetooth supported device (phone, computer, printer, headset, car kit,