The iPhone Book, Third Edition (Covers iPhone 3GS, iPhone 3G, and iPod Touch), Kelby, Scott, Terry White, eBook - Amazon.com
Review: Apple iPhone 3GS (8GB/16GB/32GB) | iLounge
iPhone 3G - Wikipedia
Apple iPhone 3G Bluetooth WiFi 3G Music 8GB Black Phone Unlocked - Fair Condition : Used Cell Phones, Cheap Unlocked GSM Cell Phones, Used Unlocked GSM Phones : Cellular Country
Today in Apple history: iPhone 3G brings a big speed boost | Cult of Mac