Trying to jump the queue in the real world? Forget about it, all you'll get is a host of hostile glares. In the world of technology however, it's a very different story. For instance, all impatient Galaxy S 4 owners, desperate to bring Android 4.3 to their handsets need to do is download and install SamMobile's latest leaked build. The nearly-complete version of the OS offers no headline-grabbing tweaks or amendments, but so long as you're up to the task of installing it, you'll save yourself a few days or weeks of waiting for Samsung to push it to your device.