CamScanner app for iOS and Android turns your mobile devices into a portable scanner. Simply take a photo of the page you wish to digitize, and the app will give you the option to convert it into a PDF/JPEG file, store in the cloud, and even print or fax the document. Smart cropping and auto enhancing make the texts and graphics look clear and sharp; easily share documents in PDF or JPEG format with others via social media, email attachment or sending the doc link; instantly print out docs in CamScanner with nearby printer via AirPrint; directly fax docs to over 30 countries from the app; and extract the scanned text (Optical Character Recognition) and make PDF files searchable.
Price: Free, but $4.99/month to unlock all the capabilities.
Unlike many apps I have tried this has a very thorough User Guide accessible in the app itself.
NOTE: a phone is not always the best way to capture documents; there may be times when you need a flatbed scanner and at the FTC (Faculty Technology Center) located in room 323 in the J. C. Long Building there is a flatbed/document feed Scanner that you can use. Visit the following link for more information about the FTC https://tlt.cofc.edu/technology/technology-lab/