Google Drive

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Google Drive is the cloud storage solution from Google, and the application offers direct access to the files and folders. Read more about Google Drive  

If you have an Android phone, then you also have a Google email address and space to store pretty much on their servers. The space provided varies depending on how you’re using it, but it's safe to say that you can upload all your photos, and still have some room for a few Excel sheets.
 
In any case, Google Drive is the application that provides users with direct access to the content of the online storage, with a simple folder tree. They can be accessed from anywhere, they can be shared with other people, and they can be viewed with just one tap.
 
Furthermore, it’s possible to save the files for offline use or to use the device camera to scan in paper documents.