To see exactly how far the device has come, we're comparing the two phones across five categories: dimensions, storage, battery life, speed and camera.
The original iPhone might have been a grand vision, but it was small in size compared to the iPhone 7 Plus. With a 3.5-inch display, the original iPhone is dwarfed by the 5.5-inch screen on the iPhone 7 Plus. Also, Apple offered five color options for its latest flagship iPhone, but the original device came in one simple color.
The original iPhone's battery life wouldn't last a day in the iPhone 7 Plus' shoes. With 5.18 watt-hours, the original iPhone had less than half the battery life of iPhone 7 Plus. That means being able to browse the web on the iPhone 7 Plus more than twice as long as you could on the original iPhone.
Life moved pretty fast over the last 10 years, and so did Apple's upgrades to its phones. While Apple never officially revealed the processor used in its original iPhone, a teardown from Semiconductor Insights in 2007 indicated it was most likely Samsung's S5L8900. Since then, the iPhone has opted for its own homemade A10 fusion chips, skyrocketing its speed.
We took the same shot with the original iPhone and the iPhone 7 Plus. As you can see, the original iPhone's camera isn't great in low light situations and could only capture a blurry scene.
We would also have done a video test, but the original iPhone didn't have that capability. Selfies weren't a thing in 2007 either. Apple didn't introduce a front-facing camera until 2010 with the iPhone 4.