A user has been using a smartphone for several hours, but now the applications on the device have become unresponsive. What action should the user take?
- Restore the mobile operating system from a backup.
- Reconfigure settings.
- Restart the device.
- Reset the device to factory defaults.
Explanation: Restoring a device to factory defaults should only be done if either or both of the following have failed: restarting the device or turning the device off and powering it back on again.
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