Watch 360° videos by moving your phone to look around, or side by side in a Cardboard viewer.
Best on iPhone: motion, dragging, and Cardboard all work. Use a 360° video saved on your device, or a direct link to one.
Looking around may not work on iPhone, because YouTube's player there doesn't allow it. It works on most Android phones and computers.
In the YouTube app, tap Share → Copy link, then come back and tap Paste. Any YouTube link works; it doesn't need to look like this page's address.