Virtual Reality allows you to experience 360 video even from your smarphone.
For best experience use head mounted device (HMD) or choose from following options:
While on Facebook or Youtube, open 360 Video and start rotating your phone to see the video around you.
Use MOZILLA or CHROME to watch 360 videos directly from your browser. Use mouse to navigate around.
WITH VR HMD
Virtual Reality Head Mounted Device GEARVR, as well as other smartphone based HMD (HOMIDO, FIBRUM) will allow you to fully experience the 360 video.