GameDynamo - "There's plenty to do in Watch Dogs, and you'll need to finish all the little side missions if you want to get all the trophies or achievements for the game. One of the side missions involves finding 'burner phones', or untraceable, pre-paid cell phones, around the city. There are 8 phones total - after finding 7, you'll be rewarded with the Vespid LE muscle car. After finding them all, you'll get the bronze trophy/15 point achievement Sanity Check. You can find the phones in any particular order. "