Galaxy Z Fold design with touch-sensitive side buttons shows up in patent application A lot of work and mental effort went into developing the Galaxy Fold series, given that there was no precedent of a foldable device hitting the consumer market. Likewise, a lot of Galaxy Z Fold design ideas have been patented by Samsung, yet they’ll probably never see the light of day in the form of a consumer-grade product. This could be the case with a recently-discovered patent that describes a series of touch-based buttons for the Galaxy Z Fold form factor. The patent describes what looks like a Galaxy Z Fold 2 equipped with touch-sensitive, button-shaped zones on the side edges. These buttons can act as power and volume controls, but of course, they could technically be assigned to other functions, much like a physical button could.