The most obvious physical difference between previous iPhones and the latest devices is the screen size. The iPhone 5S screen was 4 inches.
The iPhone 6 is 4.7 inches, while the iPhone 6 Plus measures 5.5 inches diagonally -- giving Samsung, which has dominated the giant phone market, some competition.
The iPhone 6 starts at $199 for a 16 GB configuration, $299 for 64 GB and $399 for a whopping 128 GB configuration, with a two-year contract.
The iPhone 6 Plus starts at $299 (16 GB), $399 (64 GB) and $499 (128 GB). Both phones come in three colors: gold, silver and space gray.
While both phones meet or exceed the battery life of previous iPhones in all metrics, there is a clear winner.
The iPhone 6 has up to 14 hours of talk time on 3G, while the iPhone 6 Plus boasts up to 24 hours, according to information posted on Apple's website.
When it comes to surfing the Internet on Wi-Fi through the devices, the iPhone 6 has up to 11 hours while the iPhone 6 Plus can handle an additional hour.
The iPhone 6 has up to 11 hours of video playback, while the iPhone 6 Plus has up to 14 hours. You get the idea.