Apple has explored the ability to transfer a file from one cell phone to another during a connected call, according to a new patent filing revealed this week.
the new filing includes descriptions for sending text messages, e-mails, contacts, documents and more to a caller while two phones have established a voice connection.

"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."

With this new method, you won't need to disconnect to send a file or some text data. Patent states that data could possibly be sent over a variety of network options, including GSM, GPRS, Edge, Wi-Fi, WiMax and Bluetooth.

via appleinsider ^[1]