iPhone 4S Test Notes: App SpeedCasey Chan10/14/11 9:15pm39EditPromoteGo to permalink It's faster. Screens slide smoother, apps launch quicker and stuff just works better. But that shouldn't really come as a surprise—we've seen the difference between an A4 and an A5 processor before. What IS surprising is just how fast the 4S' camera is. That thing KILLS.