Android operating system has never had a built-in file explorer (also called file managers). That is, to move or copy files within the phone, it is necessary to connect it to your computer or use third-party applications. Only Android 6.0 Marshmallow includes some kind of file explorer. To access it, go to "Settings" -> "Storage", then scroll down the list and click the “Explore”:

While Google has not created a full built-in file manager, it is necessary to use third-party products. And now we look at one of the best option - ES File Explorer, it is very easy to use and completely free.
How to install the ES file Explorer
Very simply! The ES Explorer is installed like any other application from the Google Play store, here's a direct link to the ES Explorer.

It is recommended that you only install applications from the official store, otherwise you are likely to get a malware.
How to use ES file Explorer
You can see the file system of your phone, including the visible data and the SD-card. With a long press you can select folders, groups of files, copy, move, rename, delete them and more.

Also, ES Explorer works fine with the archives, which is sometimes a must.
If you have any further questions, please do not hesitate to contact our help desk!