There's already been a question about this, but I'm certain we're missing something: Open Settings.app When Button is Tapped in UIAlertView on iPhone SDK
The generally accepted theory is that using alert view to send to the settings has been redacted. However, the One Note app has it embedded. Also, (in reverse) if you open your text message 'app' when in airplane mode you can automatically disable airplane mode.
How is this done?
UIAlertView? Something else?
EDIT
Chrome, Pandora, and One Note (so far, in my research) all successfully implement this feature. How?