Original post by: evilgabbie ,
You probably have a sticky "Power Button" I haven't teared one down but based on experience it's probably using a "dome" button on the side. If it is. Open up the phone Heat up the power button slightly Peel the orange sticker back to expose the metal dome Clean it and reassemble. If it's a "push" button; White tab that clicks into a metal assembly, you will need to resolder a new button onto it.