The iOS's Personal Hotspot feature effectively turns an Apple product running the new OS into a mobile WIFI router, in much the same way as Three's
MIFI units.
Android tablets, LTE
MiFi units, Android 3.0, video conferencing, and a whole lot more.»
Now, before you throw something at your screen, understand that they do the exact same thing with the iPad, only they make you take
a MiFi unit with you.