Remember way back last year when AT&T announced they would allow Skype VoIP calls over 3G? Well its been quite a while, but now with the new iOS4, Skype has finally updated to allow their calls over 3G to happen and allow them to be received even after the app is left. It will run in the background to allow you be online all the time. When you receive a call, a little notification bubble will pop up and let you know who is calling. The best part is that there are no additional charges for using your data instead of minutes. The only thing is, if you just jumped on the “unlimited” iPhone plan, you only have 2GB instead of those who were grandfathered in with the 5GB cap.
You can download the app here (opens App Store)