How to quickly optimize my Samsung Galaxy A5 2017 (device maintenance tools)

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The Samsung Galaxy A5 2017 has a device maintenance feature. You can get an overview and quickly optimize the battery, storage, RAM and system security on your device.
1. Touch Apps.
2. Touch Settings.
3. Touch Device maintenance.
4. Touch a category to get more information (Battery, Storage, RAM or Device security).
5. Various information and options will appear. Touch the Back icon to return to the previous screen.
6. Touch OPTIMISE NOW to quickly optimize and improve device performance. The Samsung Galaxy A5 2017 will delete unnecessary files, close apps running in the background, and scan for malware.
7. The Samsung Galaxy A5 2017 has been optimized. Touch DONE.