iOS 9 has references to Li-Fi. What is Li-Fi? Well, as you know, Wi-Fi uses radio waves, part of the electromagnetic spectrum, to communicate information across different devices. Li-Fi stands for Light Fidelity, as opposed to Wireless Fidelity (Wi-Fi). Here's the kicker, it's 100 times faster than normal Wi-Fi. Li-Fi uses light waves to help devices reach 250 gigabits/second. Imagine entire YouTube videos being loaded by the time you blink your eye, or apps downloaded for that matter. In fact, your computer installing or rendering information will probably take the most time. It should be noted that Li-Fi is in testing stages, but it is interesting to see it in iOS 9. Hopefully, we'll see this implementation very soon.