How to Use Instant Wi-Fi Hotspot in Mac OS X with iPhone
The iPhone has long had the excellent Personal Wi-Fi Hotspot feature, which effectively turns an iPhone or cellular iPad into a wireless router that Macs and other devices can connect to. That iPhone Hotspot feature gets even better for Mac users running modern versions of Mac OS X, because you can now enable the iPhones personal Hotspot feature remotely just by connecting to it – the rest is automated. This is called Instant Hotspot, and it’s an excellent trick to use to speed up a personal hotspot connection, when you’re traveling or telecommuting, or just when you need an alternative internet connection for your Mac.