Now a days in many android device the file manager comes but it will be good if you have ASTRO File Manager in your phone.it will help you a lot and also provide an option of to ZIP your file and to Un-Zip the files also which you have downloaded of transferred.
Features: File Manager, Backup, Image and text viewers, Networking, SMB, Bluetooth, SFTP, Zip Tar, downloader, thumbnails, search files, application manager, task manager, attachments.
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