The race to build the thinnest smartphone is heating up in 2025. Apple and Samsung — two of the world's biggest tech giants — are reportedly going all-in on ultraslim design with their respective high-end offerings: the iPhone 17 Air and the Samsung Galaxy S25 Edge.

Apple is entering the foldable phone market very late in the day, as while Samsung is expected to launch the seventh generation of its Galaxy Z Fold and Galaxy Z Flip models this year, Apple’s first foldable probably won’t land until 2026. But when it does, it could come with some key advantages.