1. Download SymTorrent from the link I provided at the start of this article.
2. Place a .torrent file on your phone. I'd recommend that you transfer it to a known location on the phone via your USB cable since torrents sent via Bluetooth automatically open up in text editors. You can also find a .torrent file by browsing to a torrent website via your phone's Internet browsing application and then saving the file to the location of your choosing.
3. Now open up SymTorrent and select 'Add torrent' from the menu.
4. Browse to the location of the .torrent file on your phone and select it.
That's pretty much it for starting the download process. The application will immediately begin giving you a live status of the upload and download speed for the file and the amount of data downloaded.
One limitation of the application is that it doesn't allow you to set a limit for the upload and download speeds, but if you're planning to use this application regularly then I think it hardly matters.