Tonight's The Hills finale marks the end of another juicy season and the last time we will see Lauren Conrad flash her BlackBerry as a full-time player on the show. We first noticed Lauren's cell phone addiction when she carried an LG clam cell on Laguna Beach and have watched her become a budding cell-anista over the years. She even won the award of your Favorite Cell Phone Obsessed Celeb in 2007 and 2008. Quiz yourself on the tech Lauren, her pals, and her frenemies sported throughout season five before we say adieu.