Early adapters here is what you’re waiting for –the iOS 4, and simply it rocks. But before you get around and mistakenly done wrong, Mashable has prepared a walk-through guide for every Apple-fans out there. Check out the video after the break.
If you’re still waiting for your new iPhone 4 to get into your door step or simply you’ve just done your upgrade to iOS 4, you better check out the OS’s main features at the video below.
Just let us know what you think of the upgrade?