iPhone 4S Cardboard Protective Case iPhone 4S Cardboard Protective Case from Liam Jones iPhone 4S Cardboard Protective Case University project to design an iPhone case that can withstand a substantial force using only a single material - cardboard. gLike iPhone 4S Cardboard Protective Case University project to design an iPhone case that can withstand a substantial force using only a single material - cardboard. Product Design Share R 7 n Liam Jones Product Design Engineer Liverpool, United Kingdom Follow Contact