Sketchy iPhone SE/5S Case Yellow. Sketchy by Devicewear for the iPhone 5S. Does your best thinking happen when you’re doodling? Would you rather design your own case than buy one someone else made? Let your creative juices flow with the Sketchy case for the iPhone 5S. With a clear-backed case and blank inserts, you can create a new design anytime you want. The case provides sleek protection in a semi-flexible case so you can