Even though the iPhone is capable of sending SMS, it does not support MMS (Multimedia Messaging Service) even though it has a built-in camera.
Flutter is a free application for the iPhone, which adds unlimited picture messages / MMS functionality to iPhone. Flutter supports geo-tagging too. iPhone users can download and install the application from Apple iPhone store.
Flutter does not transfer the picture directly, instead the recipient receives a link to the picture and the location on his iPhone which he has to open to view the information.