I've been using email facetime calling from my iPad and it works extremely well, much better and faster than skype, fring, tango or anyapp outthere.

Now I'd like to add this icon into my springboard, but there isn't any app or tweak to do it, I even upgraded the firmware to 4.3.1 but the icon was still not there after the upgrade.

Has anyone successfuly done it on their iPhone?