The only 100% effective way to not drop your phone on a roller coaster is to not take it on the ride at all. In 2026, most major theme parks provide free or low-cost lockers at the ride entrance. If you absolutely must carry it, the best solution is zippered pockets; standard "open" pockets are notorious for letting phones slide out during inversions or high-G turns. If your clothing doesn't have zippers, a running belt (like a FlipBelt) that sits flat under your shirt is a secure alternative. You should never use a simple lanyard, as the force of the wind can snap the plastic clips. Many parks now use metal detectors at ride entrances for high-thrill coasters to prevent "projectiles"—if you are caught holding a phone out for a "selfie" in 2026, you can be permanently banned from the park for endangering other riders.