Some sites ( http://imodzone.net/forums/lofiversion/index.php/t162724.html ) are advertising that the iPhone 3GS has MMS23 while the 3G only has straight MMS - have seen this on more than one site so I don't think it's a typo. I have Googled MMS23 but can't seem to find an explanation. Does anyone know what this is and what makes it different from plain MMS?