Samsung mobile head J.K. Shin has warned that supply constraints could hamper sales of its Galaxy S6 Edge smartphone. According to Reuters, Shin revealed production yields of the phone's unique curved display are low, meaning that the company may not be able to keep up with demand. Samsung is "working hard to resolve the difficulty in supply," but yields could be low "for a while." The issue will not affect the vanilla Galaxy S6, which has a more conventional flat display.