Google has released Android 6.0 Marshmallow to select Nexus devices and soon the new operating system (OS) will also be released to other Android-powered non-Nexus devices. The OS brings a number of new features and it also has a built-in file manager, which may go unnoticed by many users.

The Android 6.0 Marshmallow update offers better control over app permissions, native fingerprint scanner support and improved power management. The new OS also brings enhanced search features powered by Google Now.

The built-in file manager feature may not be a big improvement but it can offer some convenience to users. The file manager is somewhat hidden and users will have to search for it by going to their device's Settings, selecting Storage, going to USB and then tapping on Explore. Following this process brings up Android 6.0 Marshmallow's file manager.

Many third-party file managers allow users to rename files, create new folders, cut files and more. However, Android 6.0 Marshmallow's on-board file manager does not allow such actions.

The built-in file manager in the Android OS allows customers to copy, share and sort files. The search function of the file manager also allows users to find a file if the name is known. Users can also delete unwanted files.

The file manager in Android 6.0 Marshmallow does not have many functions but it can still be handy for customers using a microSD card on their handset.

However, most of the Nexus smartphones do not come with a microSD card slot. Many Android-powered smartphones have a microSD card including the handsets manufactured by some well-known brands such as Samsung, HTC, LG and more.

Some flagship devices of 2015, as well as most of the entry- and mid-level smartphones have a microSD card slot that lets users leverage the file manager on Android 6.0 Marshmallow when it rolls out to those devices.

Samsung has gotten rid of the microSD card from some of its flagships of 2015 including the Galaxy S6, Galaxy S6 Edge, Galaxy Note 5 and the Galaxy Note Edge, which means these mobile phones will not be able to take full advantage of the Android 6.0 Marshmallow file manager.