The Samsung Galaxy Z Fold 8 is a foldable smartphone with a special size. The Fold 8 is wider and shorter than many other foldable smartphones. When opened, you can use the large screen on the inside as a tablet. That's useful for multitasking or watching a video, for example. At Coolblue, you can buy the Samsung Fold 8 Ultra as a separate device. It doesn't matter with which provider you have a phone plan.