title: iOS SDK and device settings
body: <p><strong>What does the iOS SDK provide in terms of programmatic access to the device's settings (usually accessed via the Settings app)?</strong></p>
  
  <p>After reading through Apple's <a href="https://developer.apple.com/library/ios/#documentation/Cocoa/Conceptual/UserDefaults/Preferences/Preferences.html" rel="nofollow">Preferences and Settings</a> documentation I'm not sure if an app can programmatically adjust the device's brightness or perhaps toggle wifi on/off. I'm experimenting with <code>NSUserDefaults</code> right now. Any help or advice is appreciated.</p>