Based on Amazon's selective PR history, the company isn't likely to reveal exact sales for its recent Fire Phone any time soon—unless the company's first-ever smartphone goes gangbusters. A recent study appears to put any hopes for a record-smashing debut in serious doubt. Rather than wait for the official word, online advertising company Chitika Insights pored over its data to figure out just how well the Fire Phone has performed out of the gate—and how AT&T exclusivity may have factored in to its initial performance. On Tuesday, the advertising agency published a study that compared recent new phones' mobile browser advertising impressions, comparing them across their first 20 days. In its comparison of the Amazon Fire Phone, the LG G3, and the Motorola Droid Ultra, Chitika measured overall web usage, as opposed to unique users.