There is an application called ChompSMS for the Android platform that is as close to what you are talking about as I have seen. They provide a more iPhone-like

There is an application called ChompSMS for the Android platform that is as close to what you are talking about as I have seen. They provide a more iPhone-like interface to text messages and optionally send SMS messages (for a fee) though their own network. That is to say, using data to send the message to their servers and eventually out into the cellular network again to the destination. The idea is that in some circumstances, such as sending a text message internationally, their service is cheaper than sending the SMS directly. [Edit: here is the url: http://www.chompsms.com/ http://www.chompsms.com/ ]