While you might expect this teardown to be a little on the dull side, the iFixit team ensured entertaining reading by setting part of the phone on fire.
“We heard that Samsung used magnesium to create some of the structural components of the Galaxy S 4G,” explained the team. “So we had to light a part of the phone on fire. It turns out that Samsung tells no lie -- their structural framework IS made of magnesium!”
Lighter than aluminum, Samsung used magnesium for the main structural support plate that nearly every component on the phone is mounted to. Other details the teardown revealed were a 1GHz CPU, a 1650mAh fairly easily removable battery, 512MB of RAM, 4G via an ST Ericsson HSPA+ Thin Modem, and GPS. The Wi-Fi, Bluetooth 2.1 and the FM tuner are the work of Broadcom.