New iPhone 6 not turning on?

I got a brand new iPhone 6 eight days ago. Earlier today, it was working just fine. About an hour ago, I tried to unlock it, and it would not turn on. It was about half charged up to that point. I've charged it for over an hour, tried soft and hard resets, but it will not turn back on. Does anyone know why this could be?

You tried to unlock it from your carrier?
Well, if this was what you did, then good job. You screwed up!

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