Check it out, it's in several parts.
Here is part 1. I am sure you can find the remaining parts under the related videos.
YouTube - HTC EVO 3D and HTC EVO View 4G Event at CTIA - Part One
Here is part 1. I am sure you can find the remaining parts under the related videos.
YouTube - HTC EVO 3D and HTC EVO View 4G Event at CTIA - Part One