Phone Settings 93
• Encrypt SD card: Encrypt the memory card to prevent use on
another device. See
Memory card encryption
for details.
• Secure start-up: Protect your device with a lock when it
powers on. See
Secure start-up settings
for details.
• Set up SIM card lock: Lock or unlock the SIM card, or change
the password (PIN).
• Make passwords visible: Display a password as you enter it.
• Phone administrators: Allow privileges to restrict the control
or use of the device to particular apps.
• Unknown sources: Allow the installation of apps from non-Play
Store apps.
• Credential protection: View the type of the storage where the
security certificate will be saved.
• Certificate management: Manage the security certificate
saved on the device.
• Trust agents: View and use trust agents installed on the device.
• Screen pin: Fix the app screen so that only the currently active
app can be used.
• Usage access: View details on usage of apps on the device.
Date & time
You can customize date and time settings for your device.
1
On the settings screen, tap General Date & time.
2
Customize the settings.
Smart cleaning
You can clean up temporary files or apps that are no longer used to
free up storage space.
1
On the settings screen, tap General Smart cleaning.
2
Select a category, then select an item to delete.
3
Tap DELETE DELETE to delete the selected item.
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