If you did not yet jailbreak your iPhone, you are missing some important functionality as free tethering (or, if not free, for about $20 one time payment), task manager, 5 icon dock, etc.
Verizon version of iPhone 4 recently added tethering through personal hotspot, although it is not free, nor cheap (at $20 month on top of your existing data plan) and comes with a 2GB data limit to be used while in hotspot / tethered mode.
Now, starting with the launch of iOS 4.4 on March 11 (also the data iPad 2 starts selling), AT&T will also start offering the Personal Hotspot feature. The price will be identical with the Verizon one at $20 / month and will require the $25 DataPro plan as well. The update will roll put automatically with the iOS 4.3 version update, but will only be available to iPhone 4 devices.
While DataPro plan will still be limited at 2GB / month, the new bundle DataPro / Personal Read More…