Apple has a new patent entitled "Auto Messaging to Currently Connected Caller." The patent focuses around the potential to send documents, emails, txt msgs, files, etc. to the person on the other end of the line while you are in call.
While a user of a mobile device is using telephony services, the user may want to send a message or a file to another part . . . To send this information, the user may have to disconnect the call, and then perform a lookup of the caller's contact information prior to being able to send the message or file. This multi-step process can be tedious for the user.
Apple is doing a lot of looking into file sharing technology for it mobiles. A similar patent that AppleInsider discovered in June details how an iPhone could share media like music, video, podcasts, images, voice mails with other iPhone users.