Auto Optimization; Diagnostics; Maintenance Mode; Apps - Samsung SM-T638U User Manual

Settings

Auto optimization

You can set the device to perform auto optimization when your device is not in use.
On the Settings screen, tap Battery and device care → Auto optimization and tap the
Restart when needed switch to activate it.
Software update
Update your device's software via the firmware over-the-air (FOTA) service. You can also
schedule software updates.
On the Settings screen, tap Battery and device care → Software update.

Diagnostics

Test your device using Samsung Members.
On the Settings screen, tap Battery and device care → Diagnostics. Select an item to test or
tap Test all to test all items.

Maintenance mode

Activate maintenance mode to protect your privacy while someone else is using your device,
such as when you send it for repairs.
On the Settings screen, tap Battery and device care → Maintenance mode → Turn on.

Apps

Manage the device's apps and change their settings. You can view the apps' usage
information, change their notification or permission settings, or uninstall or disable
unnecessary apps.
On the Settings screen, tap Apps.
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