Google gives away their second virtual reality headset Cardboard at Google I/O 2015, the first to officially support Apple's iPhone. What you're going to see here is a simple piece of equipment, one made of cardboard (literally), glass, and a bit of conductive foam. No more magnets. Still velcro, but a little bit different use of metal than before. This allows not just Android devices to work, but any smartphone. Even devices that aren't necessarily running iOS, if you want to be especially explorative with it.