Mobile VR headsets such as Samsung Gear and Oculus Go are separate devices from your PC, so you can't simply launch into a VR preview the way you can with a desktop headset. Instead, you need to package the project and deploy it to the device so you can run it directly on the headset. You'll have to set up a few things to make this possible.
Setting up for mobile VR
Creating or joining an Oculus developer organization
First, if you're going to develop for Oculus-based mobile VR platforms, you need to register with Oculus as a developer. We're assuming here that you've already created an account with Oculus since you would have needed to do this to use the headset at all. If you haven't yet done...