The iPhone 4s offers a number of amazing new features such as a new operating system, a voice-activated personal assistant named Siri, a free messaging system and a lot more. It has a built-in Wi-Fi that allows you to connect to available networks and you just have to activate wireless settings when connecting to a network and turn it off to preserve the battery life. Siri is the popular built-in personal assistant that can help you find driving directions or get answers to your questions. The device also offers a feature that allows you to sync with iTunes and to backup or transfer movies, photos, games, aps and music. You can even sync the contents of your device with iTunes without connecting it to your PC. Another feature is called the iMessage that allows you to send free text messages to all of your friends, family or acquaintances who are using an iOS 5 device. Unlock iPhone 4S Software