Mobile World Congress: Speakers from Telefónica, Mastercard and more share their previews

The world is truly mobile, yet marketers are still struggling to fully understand the opportunities out there. Ahead of Mobile World Congress 2017, The Drum caught up with some of this year’s speakers to find out where they think mobile is taking us, and to get a sneak preview of what they’ll be discussing at the conference.
 
Dan Rosen, global director of advertising, Telefónica 
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At Mobile World Congress 2017 I will be talking about the role telecoms comp