Foldables already ask you to carry more hardware than a traditional slab phone, so every extra millimeter of case thickness is easier to notice.

That is why thin cases can make more sense on devices like the Galaxy Z Fold 8. The goal is not minimum protection at any cost, but keeping the phone comfortable while adding grip, scratch protection and useful features such as magnets.

For shoppers, the better question is how much protection you actually need and how much extra bulk you are willing to carry every day.