Talk and Send File via iPhone - Patent

This patent by Apple has just been filed:

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.

This means that you can send or receive a file with the person you are talking with, at the same time, on your iPhone.