Gallery: iPhone 3GS Teardowns Reveal Underclocked CPU, More | WIRED
iPhone Repair - 3GS Logic Board Removal - YouTube
Apple Demo on Twitter: "Prototype iPhone 3GS (EVT) Red Board running SwitchBoard. These units where Engineering Samples with only a 2GB NAND (storage) installed. The copyright date on the back is 2008.
Cost to build Apple's new iPhone 3G S estimated at $179 | AppleInsider
Test working for iphone 3/3g/3gs Unlocked motherboard full function 8gb used replacement mainboard with full chips Logic Board|Mobile Phone Circuits| - AliExpress