The best way to do this is to download the Dropbox App for your phone. Once you’ve set up Dropbox on your mobile device, find a PDF you would like to import directly into ReadCube and select it. From here, select the “export” icon in the top right and under the “open with” options, swipe to the right until you find ReadCube. Choose this option and your PDF will be imported & indexed!
Please note that the fastest way to import a bunch of articles is through the free ReadCube Desktop.
Network file share