Q:

Do I have to buy or need a 3D-enabled phone to use Google Cardboard?

Google cardboard comes with 3D glasses. Does that mean that we will be able to watch 3D videos using a smartphone like the Moto-G (1st edition) which is not 3D enabled?

A:

I'm able to use the YouTube VR 3D app to view 3D YouTube videos on my Samsung Galaxy 4S.  I can also view Cardboard specific content with the Cardboard app on this same phone; as I understand it, Cardboard is designed to work with ordinary smart phones.

