Settings
Format a memory card
When formatting an SD card, you should back up your music and photo files that are stored on the card because formatting the SD card deletes ALL stored files.
1.From Settings, tap 
Battery and device care > Storage.
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2. Swipe the screen to SD card, and then tap • More options > Format.
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3. Tap Format to confirm.
Memory
Check the amount of available memory. You can close background apps and reduce the amount of memory you are using to speed up your device.
◌From Settings, tap 
Battery and device care > Memory. The used and available memory are shown.
•Tap Clean now to free up as much memory as possible.
•Tap View more to view the full list of apps and services using memory. Tap 
to include or exclude these apps and services.
•Tap Apps not used recently to view apps and services that are included in this group. Tap 
to include or exclude these apps and services.
•Tap Excluded apps to view a list of apps that have been excluded. Tap+Add apps to choose apps to exclude from memory usage checks.
•Tap RAM Plus to select how much internal storage to use as virtual memory to improve app performance.
Advanced device care options
Other Device care features are available in the Advanced menu.
◌From Settings, tap 
Battery and device care. The following options are available:
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Search: Find panels that are either installed or available to install.
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Care report: View information about the restart history and charging and temperature tips.
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