Samsung SM-S9210 - Device Care

Settings
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Device care
The device care feature provides an overview of the status of your device’s battery,
storage, memory, and system security. You can also optimise the device.
On the Settings screen, tap
Device care .
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Optimise now : Close apps running in the background or using an abnormal amount
of battery and scan for crashed apps and malware to optimise your device.
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Battery : Check the remaining battery power and time to use the device. For devices
with low battery levels, conserve battery power by turning on power saving features.
Refer to Battery for more information.
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Storage : Check the status of used and available storage and free up storage by
deleting unnecessary files, such as the files in the recycle bin, unused files, or
duplicated files after checking them.
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The actual available capacity of the internal storage is less than the
specified capacity because the operating system and default apps occupy
part of the storage. The available capacity may change when you update the
device.
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You can check the available capacity of the internal storage in the
Specification section for your device on the Samsung website.
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Memory : Check memory usage or tap Clean now to free up memory by stopping
background apps.
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App protection : Scan your device for malware and other suspicious activity to stay
safe.
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Performance profile : Change the performance profile in consideration of the
device’s processing speed, battery life, and cooling efficiency.
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Auto optimisation : Perform auto optimisation by closing background apps or
cleaning up memory, to keep the device running in its best condition.
Tap
Auto restart to set the device to restart automatically when performance issues
are detected or at a time you set.
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Software update : Update your device’s software through the firmware over-the-air
(FOTA) service. You can also schedule software updates.
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Diagnostics : Test your device using Samsung Members.
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Maintenance mode : Turn on maintenance mode to protect your privacy while
someone else is using your device, such as when you send it for repairs.