Samsung Galaxy Z Fold 3 5G | Foldable Smartphone & Tablet In One Unfold a world of possibilities with the Samsung Galaxy Z Fold 3 5G. Use it closed as a premium 6.2-inch smartphone, or flip it open to reveal a massive 7.6-inch workspace perfect for gaming, streaming, and split-screen multitasking. Features include a triple 12MP rear camera system, an invisible under-display selfie camera, 12GB of RAM, and a highly durable, water-resistant design.