With the iPhone 4S being jailbroken, developers are now scrambling to release tweaks that rely on features unique to the latest Apple smartphone – most notably, of course, Siri.
The voice-assistant may not be as revolutionary as the smooth and easy-to-use multitouch interface that debuted on the original iPhone five years ago, but it's definitely one of the best, if not the best implementation of voice-technology in the current generation of smartphones.
That said, Siri does have some pretty embarassing shortcomings – while you can easily create reminders, you cannot open apps or toggle system settings. However, a jailbreak tweak does just that.
Available in the Cydia Store, SiriToggles adds many useful features to Siri. For example, you can ask it things like "How much battery is left?" and it will reply with the current battery level, without ever pulling your iPhone out of your pocket – particularly useful when jogging. As its name implies, it also let's you toggle some system settings like WiFi and Bluetooth, or set a custom brightness.
The arguably most useful feature, however, is that you can now launch apps. Just say "launch [name of app]" and Siri will launch the app for you, something which competing voice-control systems on Android and Windows Phone can do by default.
If you're interested, SiriToggles is a free download in the Cydia Store, which of course requires a jailbreak to be installed. It obviously only works with the iPhone 4S since that's the only device with Siri right now.