If you've got a Verizon or Sprint iPhone 4 and the On/Off button seems to be recessed or no longer pushes down when pressed, a DIY repair can alleviate the issue. While this isn't the easiest repair to perform, it's a lot cheaper than an out of warranty replacement through Apple. So if you aren't eligible for an upgrade and are out of warranty, it may be worth a try.
Follow along and we'll walk you through the process step by step.
If you have a GSM/AT&T iPhone 4 with a On/Off button that's stuck, broken, collapsed, or otherwise non-functional, and you don't have AppleCare or a warranty to help you, don't worry -- a DIY repair can fix the issue and have you happily sleeping or waking your iPhone 4 again in no type, if you're game to give it a try.