It was released on Septemalong with its mid-range counterpart, the iPhone 5C. Part of the iPhone series, the device was unveiled on Septemat Apple’s Cupertino headquarters. The iPhone 5S is a smartphone designed and marketed by Apple Inc. This manual guide is a officially pdf file from Apple Inc. You can download or read the iPhone 5s user manual here. IPhone 5S user guide has specially to guide you the functions and features of your iPhone 5S smartphones.