One way to store more data when you are low on hard phone space is by using compression to make the files and folders you already have on the phone take up less memory. To compress files on Android, we recommend you to use AZIP Master – the best file compression and decompression application on the phone today.
You can download the app here 
How to compress files with AZIP Master?
1 Click this icon on the home screen
2 Select any file you want to compress
3Choose ‘Compress’
4 Setting your compression files then tap ‘COMPRESS’
5 Wait a few seconds and you already have a smaller file
Lastly
Compressed files may contain many separate files in one large archive, which often takes up less space than the original files. Through this article, hope that you have understood and can compress files on your phone easily with AZIP Master.
Also read: Manage your files easier with Workspace of AZIP Master