Nokia Lumia 2520 - Manual (Page 45)

A cache is a memory location that is used to store data temporarily. If you have, or have tried to,
access confidential info or a secure service, requiring passwords, clear the cache after each use.
Close all network connections
Save your battery by closing internet connections that are open in the background. You can do it
without closing any apps.
Swipe in from the right of the screen, and tap Settings > .
Switch Airplane mode to On .
All wireless communication on your tablet is stopped.
Close a Wi-Fi connection
Switch Wi-Fi to Off .
Close the mobile broadband connection
Switch Mobile broadband to Off .
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