title: Idle time period before screen lock, wifi shutdown, phone sleep?
body: <p>I want to know <strong>how much time of inactivity</strong> has to pass before:</p>
  
  <ol>
  <li>the screen locks (Actually I know that one, it's configurable in the settings) </li>
  <li>the Wi-Fi shuts down? Where can I change this value?</li>
  <li>the phone goes to sleep mode? Where can I change this value?</li>
  </ol>
  
  <p>UPDATE: I don't want to lock anything. I only want to know how long it takes normally, when there are no locks set? Where in the OS code is this specified?</p>