The button at the top of my iPhone 4S, commonly known as the lock button, power button or sleep button, is broken. It doesn't click at all. This can be really, really annoying because you can't turn off the iPhone, you can't take a screenshot, and, most frustratingly, you can't put your iPhone to sleep.
Apparently, this is a common problem, and Apple has even been taken to court over it. Two iPhone owners in the US attempted to sue Apple over the problem, which they say is caused by a faulty design.
In their complaint, which was filed in February, the two plaintiffs say that Apple knew that there was a problem with the iPhone 4 and iPhone 4S' lock button design. They also say that the apparent fault could be hazardous because it prevents users from being able to turn off their phones on a flight, for example.
US District Judge Gary Feess threw out the power button case, though, dismissing the claim because the plaintiffs failed to prove a breach of warranty and RICO.
There is still a similar case open in court, though. In May, a nearly identical case was filed against Apple, in which the plaintiff argues that the flex cable mechanism attached to the power button, which we've found is the cause of the problem, becomes inoperable after extended use.
If your power button is broken (and judging by the amount of people that read this article every day, that's a lot of you), we feel your pain, but you'll be pleased to hear that it is kind of fixable, and there's a really handy workaround that you might not know about.
Broken Home button? There's a fix for that too: How to fix a broken Home button.
How to fix a broken iPhone lock button: Hardware repair
If your iPhone is still in warranty, Apple may be able to repair the hardware for free. Check out our iPhone warranty guide to see what your rights are. You can make an appointment with Apple to find out if you're covered. If it turns out you're not covered, a Genius from the Apple Store will be able to tell you how much it'll cost to get it repaired.
If you're not happy with coughing up the cash to get your iPhone's lock button repaired, or if your bank balance won't allow it, you could consider repairing the iPhone yourself.
We wouldn't recommend trying to repair your iPhone yourself unless you're confident in doing so, as it's really quite difficult. Plus, it's not as simple as getting a new lock button and fitting that in - it could actually be that there's a tiny part missing from the power button flex cable. Unfortunately, this is one of the last components to be removed from the iPhone during repair.
Also, attempting to repair your iPhone yourself could invalidate your warranty, so if it doesn't work and you end up having to take it to Apple, it's likely you'll have to pay.
How to fix a broken iPhone lock button: the software solution
In iOS, there's a little known feature that can help massively when buttons stop working on your iPhone.
To get to this feature, go to Settings > General > Accessibility. There, scroll down to click AssistiveTouch and slide the toggle so that it appears green.
Above: If you're still running iOS 6, it'll look like this
Now, a grey square with a white circle inside will appear on your screen. You can drag this little square anywhere you prefer. It's disruptive pretty much anywhere on your screen, but we found that the bottom third of the right hand side of our screen was the best for us.
Pressing the circle will bring up a menu with four different options to choose from: Siri or Voice Control (depending on which model of iPhone you own), Device, Home and Favourites.
To access the lock button, tap device, and then tap Lock Screen.
How to take a screenshot on an iPhone with a broken lock button
This won't enable you to take a screenshot, but pressing More and then Screenshot will. The plus is that the AssistiveTouch menu and button won't be present in your screenshot (hence our photographs in this article).
How to turn off an iPhone with a broken lock button
You can turn off your iPhone even if the lock button is broken, too. To do so, tap the grey accessibility button, tap device and then tap and hold Lock Screen. This will bring up the usual power off screen so you can then slide to power off.
Dont't forget, though, if you turn off your iPhone with a broken lock button then you won't be able to turn it back on unless you plug it into your computer or mains adaptor.
While this might sound like an annoying workaround at first, we found that after a few hours, it became second nature to lock our iPhone using the feature.