Using data traffic when travelling
When you travel outside of your home mobile network, you might need to access the Internet using mobile data traffic. In this case, you need to activate data roaming on your device. It is recommended to check the relevant data transmission charges in advance.
To activate or deactivate data roaming
1 From your Home screen, tap .
2Find and tap Settings > More… > Mobile networks.
3 Select a SIM card.
4 Mark or unmark the Data roaming checkbox.
You can’t activate data roaming when mobile data is turned off.
Airplane mode
In Airplane mode, the network and radio transceivers are turned off to prevent disturbance to sensitive equipment. However, you can still play games, listen to music, watch videos and other content, as long as all this content is saved on your memory card or internal storage. You can also be notified by alarms, if alarms are activated.
Turning on Airplane mode reduces battery consumption.
To turn on Airplane mode
1 From your Home screen, tap .
2Find and tap Settings > More….
3Mark the Airplane mode checkbox.
You can also press and hold down the power key 
and then select Airplane mode in the menu that opens.
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