At the Macworld Expo on Jan. 9, 2007, then-CEO Steve Jobs announced the first Apple iPhone. Apple fans were delighted, but most everyone else was skeptical. Since then, the iPhone has upended and redefined the mobile market, thanks to a relentless series of improved models, with the new iPhone 5 as the latest example. Take a tour of each generation of iPhone and the capabilities it has brought to the mix.
• iPhone: 3.5 inches diagonally, 320 by 480 pixels, 3:4 ratio
• iPhone 3G: 3.5 inches diagonally, 320 by 480 pixels, 3:4 ratio
• iPhone 3G S: 3.5 inches diagonally, 320 by 480 pixels, 3:4 ratio
• iPhone 4: 3.5 inches diagonally, 640 by 960 pixels (Retina display), 3:4 ratio
• iPhone 4S: 3.5 inches diagonally, 640 by 960 pixels (Retina display), 3:4 ratio
• iPhone 5: 4.0 inches diagonally, 640 by 1,136 pixels (Retina display), 9:16 ratio
iPhone radios
• iPhone: 2.5G GSM cellular, 2.4GHz Wi-Fi, Bluetooth 2.0
• iPhone 3G: 3G GSM cellular, 2.4GHz Wi-Fi, Bluetooth 2.0 + EDR
• iPhone 3G S: 3G GSM cellular, 2.4GHz Wi-Fi, Bluetooth 2.1 + EDR
• iPhone 4: 3G GSM or CDMA cellular, 2.4GHz Wi-Fi, Bluetooth 2.1 + EDR
• iPhone 4S: 3G GSM and CDMA cellular, 2.4GHz Wi-Fi, Bluetooth 4.0
• iPhone 5: LTE and 3G GSM and CDMA cellular, 2.4GHz and 5GHz Wi-Fi, Bluetooth 4.0
iPhone cameras
• iPhone: 2-megapixel, still-only rear camera
• iPhone 3G: 2-megapixel, still-only rear camera
• iPhone 3G S: 3-megapixel, still-and-video rear camera with autozoom and autofocus
• iPhone 4: 5-megapixel; still-and-video (720p) rear camera with autozoom, autofocus, and LED flash; 0.7-megapixel, still-and-video front camera
• iPhone 4S: 8-megapixel; still-and-video (1080p) rear camera with autozoom, autofocus, LED flash, IR filter, and image stabilizer; 0.7-megapixel, still-and-video front camera
• iPhone 5: 8-megapixel; still-and-video (1080p) rear camera with autozoom, autofocus, LED flash, IR filter, image stabilizer, background light, noise reduction, precision lens; 0.7-megapixel (720p), still-and-video front camera
