iFixit

At last! The moment you've all been waiting for.

The battery is huge, and soldered to the logic board.

You can see the SIM card bracket and headphone jack on the rear panel.

It is a 3.7 volt Li-Ion Polymer battery.

You can see at least two antenna cables connecting to the logic board.

Disconnecting the two antenna cables.

There's a dab of glue underneath both of the antenna connectors, presumably for reliability.

One has to imagine that Apple was extra-paranoid about reliability on this phone. They've certainly learned their lessons from the iPod.

Removing three Phillips #00 screws securing the logic board to the front panel. The screws are:

• Where the screwdriver is.
• Underneath the black camera in the upper right hand corner.
• To the left of the battery wires that are soldered to the logic board.

Removing the camera on the top of the phone.

Sadly, there don't appear to be any software settings — it's just point and click.

Removing ten Phillips #00 screws around the perimeter of the iPhone.

The battery has Apple model number 616-0290 L1S1376APPC.

Lifting up the logic board. There are three connectors underneath. They are speaker, touch sensor, and display cables.

Disconnect the two connectors on the left side of the image.