Hiding files on Android phone without wasting storage for a third party

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On a Android phone, the files can be hide without installing a third party application from google playstore.
       For that make a folder in file manager and move the files that should be hidden and rename the folder adding " . " (dot) extension infront of the folder. And then the folder disappears and when we want to have the folder, we only have to do is, unhiding the hidden folders. Then the folder would appear

Creating a new folder
After adding files, rename the folder
Rename the folder with " . " extension
When we need the folder, simply apply "show hidden files"
The folder is there

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