Five Steps to free up space on your Android device

Android phones and tablets can be filled quickly when you download apps, add media files like music and movies, and cache data for offline use. Many low-end devices can only hold a few gigabytes of storage space, which makes it even more problematic.

The less space you have, the more time you have to dedicate to internal memory for micromanagement. If your space is regularly insufficient and you need to manage it, next time you can buy a phone or tablet with more storage space.
Use Android's built-in archiving tool
Modern versions of Android have a storage window where you can see exactly how much storage space is on your device. To find it, open the Settings screen and tap Storage. You can see how much space is used by applications and their data, from images and videos, audio files, downloads, cached data and various other files. The fact is that it works slightly differently depending on the version of Android you are using.

Android 8.0 Oreo
Google has taken a fundamentally different approach than Oreo compared to previous versions of Android, dividing the storage menu into a more detailed list.
When the list has been grouped by application, then for different file types in Nougat and below (which we will discuss later), Oreo does things slightly differently by group and file by category. For example, when you open the "Photos and videos" option, you see not only which photos and videos take up space on your phone, but also all the associated applications, such as photo or video editor.
All applications do not fall into the predefined categories, so there is a sort of overflow for everything else, called "other applications". Similarly, there is a "File" option that displays any file that does not fit into a different category.

That being said, there is actually an absurdly simple way to free up space in Oreo without having to scroll through each menu item: the big "Free Space" button at the top. Touch it.
This essentially shows a list of downloads on your device, as well as all the photos and videos that have already been backed up (this is a simple control option, not a complete list) and all the "little used applications" if any . . . Choose what you want to remove and create a free beanbag at home.
However, if it doesn't make it clear enough, it's time to manually search for each option. Pay particular attention to the applications and the amount of data they store. For example, apps like Google Play Music (or other streaming music apps) can store a lot of data during playback. Remove it to save a lot of space.

Once you're in the recording menu in any version of Android in Oreo, tap an option to see exactly what the space is using and delete it. For example, you can tap Applications to view and delete a list of applications that use more space. Tap download to see the list of downloads where you can delete files and touch cached data to delete data from all installed apps. Use the other options to view files that take up space and delete unwanted files.
When processing applications, keep in mind that the application itself adds the data and cache to the total space used by the application. For example, if Spotify is installed and you have cached a lot of offline music, Spotify can use more than 1 GB of space. You can clear the Spotify cache to forcibly delete all this or start the Spotify app and tell it to cache less data for offline listening. Each application that caches data for offline use works as follows. In the screenshot below, Google Play Music is only 40.66 MB, but 2.24 GB of cached music is stored.
You can view the space used by an application for these data files and delete the cached data for a single application by touching them in the application list, accessed by pressing Applications in the registration window or by pressing applications. in the main settings screen.