Single PCBRemoving the logic board. Like the 3G, there is a single large PCB with all components.
Images by iFixit, used by permission
Mark W. Kaelin has been writing and editing stories about the IT industry, gadgets, finance, accounting, and tech-life for more than 25 years. Most recently, he has been a regular contributor to BreakingModern.com, aNewDomain.net, and TechRepublic.