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
1From 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.
Memory
You can save content to your device's memory card.
Memory card
Your device supports a microSD™ memory card, which is used for storing content. This type of card can also be used as a portable memory card with other compatible devices.
You may have to purchase a memory card separately.
Safely removing the memory card
You can safely remove the memory card from your phone any time when the phone is turned off. If you want to remove the memory card when your phone is on, you must first unmount the memory card before you physically remove it from the phone. This can prevent damaging the memory card or losing data stored on the memory card.
To unmount the memory card
1From your Home screen, tap 
.
2Find and tap Settings > Storage > Unmount SD card.
Formatting the memory card
You can format the memory card in your device, for example, to free up memory. This means that you erase all data on the card.
All content on the memory card gets erased when you format it. Make sure you make backups of everything you want to save before formatting the memory card. To back up your content, you can copy it to your computer. For more information, refer to the chapter Connecting your device to a computer on page 100.
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