Yes, your smartphone is the primary tool for managing Lightning Lane passes at both Walt Disney World and Disneyland in 2026. The entire system is integrated into the My Disney Experience (Florida) and Disneyland (California) apps. You use your phone to purchase the passes, select your attraction arrival windows, and modify your plans throughout the day. When it is time to ride, you can either scan your phone using the "Disney MagicMobile" service (via your digital wallet), or use a linked MagicBand+ or physical card. Because the system relies heavily on the app for real-time availability and "Multi Pass" selections, it is essential to have a high-fidelity mobile device with a reliable battery or a portable charger. Without your phone, you would be unable to make new selections or view your upcoming windows, effectively making the smartphone a mandatory piece of theme park gear for modern Disney travel.