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Q&A: Snap book author on the app's challenges

lllustration: Greg Ruben / Axios; Photo: Mark Lennihan / AP

Snapchat has struggled to own its narrative, in large part because its service is most popular with a generation that is younger than the journalists who cover it. That's just one of several insights from Billy Gallagher, the author of a new book on Snapchat.

The bottom line: Gallagher addresses that and more, including Snapchat's long-running battle with Facebook. Read on for more from our interview with Gallagher, whose book "How to Turn Down a Billion Dollars: The Snapchat Story," comes out on Tuesday.