W705 supports Threaded Messaging just like the current Window Mobile Phone and iPhone Series. In W705, Threaded Messages is also called Conversations. You will be able to see all the messages that you and the other party are communicating. In addidtion, it has another function which also allowed you to see individual SMS Message also just by going to the Inbox. Window Mobile Phone or iPhone does not have this extra service but only Threaded Messages.
Conversations
This is the term name for Threaded Message for Sony Ericsson Phone. In here, you will be able to see all the messages you are currently exchanging with the other party. You can scroll to the mesaage and get details like when it was sent and received. In addition, you can also scroll to your desire message and choose to delete the particular message or all those older than this message.