iPhone Platform Iteration
AnandTech (search for "iPhone" or "iPod Touch")
- iPhone (1st gen): Dissection
- iPhone 3GS: Hardware Exposed & Analyzed / Performance Tests / CPU Analysis
Apple
- About security content of updates
iFixIt
- iPhone (1st gen): Repair Manual / Teardown / Troubleshooting Guide
- iPhone 3G: Repair Manual / Teardown / Troubleshooting Guide
- Dock: Teardown
- iPhone 3GS: Repair Manual / Teardown (video playlist) / Troubleshooting Guide
- iPod Touch (1st gen): Repair Manual / Teardown / Troubleshooting Guide
- iPod Touch (2nd gen): Repair Manual / Teardown / Troubleshooting Guide
- iPod Touch (3rd gen): Repair Manual / Teardown
TheiPhoneWiki - Resource for detailed hardware and software data
Rapid Repair
- iPhone 3G: Repair Guide
- iPhone 3GS: Repair Guide
- iPod Touch (2nd gen): Repair Guide
TechInsights - requires membership or purchase (search)
- iPhone (1st gen): Full Product Teardown Report / Quick Turn Teardown
- iPhone 3G: Full Product Teardown Report / Quick Turn Teardown
- iPhone 3GS: Full Product Teardown Report / Quick Turn Teardown
- iPod Touch (1st gen): Quick Turn Teardown
- iPod Touch (2nd gen): Quick Turn Teardown
TechOnline (search for "iPhone")
- iPhone (1st gen): Under the Hood
- iPhone 3G: Under the Hood / Teardown video
Trejan.org - Model info, firmware info and download links, baseband firmware info
Wikipedia