Hide Folder without any Software in Nokia S40 phones. This trick is very simple friends.You don’t need any thing for this trick. Just simply follow the steps and your work will be done.
1. Create a folder of any name like abc.
2. Move the files you want to hide.
3. Now just add the extension .jad like if you have abc folder rename it to abc.jad.
4. Now create another folder in same directory with the same name but different extension of .jar. (example abc.jar)
5. Now your main folder will hide and it will not be shown. To simply see the original folder rename the visible folder and your hidden folder will appear. This trick is tested and is free from any side effect.so enjoy hiding your private data.