Smartphones have become a primary gateway for consuming political news, but we know little about what individuals actually see on their phones. In new research, Guy Aridor, Tevel Dekel, Rafael Jiménez Durán, Ro’ee Levy, and Lena Song open the smartphone black box using novel content data and document individuals’ exposure to election-related content during the 2024 presidential election, as well as the drivers of this exposure.