This document discusses unlocking an iPhone 4S to use it on different cellular networks. It describes how buying an iPhone locks it to a single network provider. Jailbreaking, or unlocking, the iPhone 4S allows it to be used on any network. The document recommends finding unlock software that supports iOS 5, has automatic updates, and is from a reputable source. It promotes a tool that can allegedly jailbreak the iPhone 4S within minutes to unlock network usage.