The iPhone is easy to take apart

Apple took account of criticisms formulated about the 3G iPhone and is certainly prepared to ease after-sales service of it, which will be sold with tens of millions of specimens.

As shown in this photo, already iFixit has taken it apart. All one has to do is to take out the two screws located each side of the connector, lift up the screen and even reach the battery, which is not soldered in.
To finish: a little photo of the iPhone all in pieces.