title: Simulate smaller screen on a Tablet?
body: <p>I've developed an app using my Android tablet as a testing tool. I want to test it on smaller screens and I find the emulator damn slow. Is there a way I can configure my tablet to simulate a small screen - perhaps darken everything around and only display a small square?</p>
  
  <p>Like how in Windows we can change the display resolution in the settings screen...asking for too much?</p>