Try something like a
Canon Powershot SX-150is for decent quality YouTube videos
I own this camera, as well as a Rebel T3i ... and to be honest, I think the video quality from the Powershot is every bit as good as the Rebel ...
The Powershot SX-150is has the same Digic4 CMOS sensor as the pricier Rebel T3i and this is the main factor that is going to make your photo/video quality better than a smartphone ...
You can have a gazillion megapixels, and without a decent CMOS sensor, your images/videos will still be sub-par using a smartphone.