Many of Apple’s iPhone 5 users have been reportedly facing an issue with the wake/sleep button of the device on the top and so the Cupertino company has undertaken a button replacement program under which people owing a eligible iPhone 5 can get it replaced free of cost.
Here is what the company has to say “Apple has determined that the sleep/wake button mechanism on a small percentage of iPhone 5 models may stop working or work intermittently. iPhone 5 models manufactured through March 2013 may be affected by this issue. Apple will replace the sleep/wake button mechanism, free of charge, on iPhone 5 models that exhibit this issue and have a qualifying serial number.”
You can straight away visit to the official Apple website to see whether your iPhone 5 is eligible for a replacement or not. So if you are undergoing through any kind of such problems, you can get it fixed.