Is your iPhone's sleep/wake button finicky? You might be in luck. From May 2nd in the UK, Apple will offer a new program to fix a small number of iPhone 5S models with faulty buttons. Just input your phone's serial number on this page to see if you qualify. And if you do, be prepared to be without your phone for a few days.
The repair process is pretty straightforward. Starting May 2, just take your phone to an Apple store or Apple authorised service provider, where they'll verify it (again) and ship it back to Apple. If your phone has any other problems—say, a broken screen—that will get in the way of replacing the bad button, you'll have to fix that problem first, or Apple will fix it for you for a probably pretty hefty fee. Good luck! [The Loop]