How to turn on my iPhone when my top button doesn't work?

My 'off/on' button on the top of my iPhone 4S stopped working a while ago and today my phone just randomly froze and then turned off. It has been plugged in for a while now but refuses to turn back on. I need help!

It's broken and now you wouldn't be able to turn it on but didn't you bother trying to use the home button?

Don't ever shut it off, you don't need too. To make it silent at night just flip the tiny corner switch.