Possibly the most anticipated new feature to come with iOS 4.3 is the Personal Hotspot capability.
After March 11, all the iPhone 4 owners will be able to turn their devices into a personal wireless hotspot.
With Personal Hotspot, you’ll be able to connect up to five
devices to your iPhone 4 via WiFi, Bluetooth and USB to share your 3G
The WiFi hotspot is also secure, with a password being
required on each device you attempt to connect to it.
In terms of
battery life, Apple also has you covered with a smart feature that will
automatically turn off the hotspot if it detects that it’s not being
used at all.