Apple just unveiled its iPhone 14 line. Here's how Apple's iconic smartphone has changed the world forever since 2007.

Apple's first iPhone from 2007 was the one that started it all. It had a 3.5-inch screen, a 2-megapixel camera, and topped out at just 16GB of storage. It didn't even support third-party apps yet.

While those specifications seem primitive compared to today's super-powerful smartphones, the original iPhone was critical in setting the standard for mobile devices for generations to come. Its multi-touch display, for example, was crucial in paving the way for the touch-based operating systems found on smartphones, tablets, and computers around the world. 

With the iPhone 3G, Apple added critical new capabilities such as a GPS sensor for location-monitoring, support for 3G networks, and faster performance.

But perhaps most importantly, it introduced the App Store, transforming the iPhone from just a mobile device capable of accessing the internet to a full-blown computing platform.

Today, the App Store hosts more than 2 million apps, ushering in the booming app economy that made it possible for the Ubers and Snapchats of the world to flourish. 

The iPhone 3GS introduced further refinements to Apple's smartphone, offering improvements like a better 3-megapixel camera, voice control, and longer battery life.

The new software that launched on the iPhone 3GS was also just as important — it introduced features that have long been the standard such as cut, copy, and paste actions, as well as support for multimedia messaging. 

The iPhone 4 represented the first major redesign of the iPhone since its launch in 2007. It had a thinner profile and a sharper shape compared to its predecessors, and featured a body made of glass with a stainless steel trim that wrapped around its edges. 

The iPhone 4 also introduced the Retina display, which has become a hallmark of Apple's products ever since, and was the first iPhone to come with FaceTime video-calling.

While the iPhone 4 was generally well-received, it wasn't immune to criticism, most notably because of a call reception issue that became known as "Antennagate." Some iPhone 4 owners experienced frequent dropped calls due to an issue with the antenna when the phone was held a certain way, a problem that prevented Consumer Reports from recommending it in 2010. 

The headlining feature of the iPhone 4S was the introduction of Apple's digital voice assistant, Siri.

Today, Siri can be found in nearly all of Apple's products, from the Apple Watch to the Mac and HomePod Mini. 

The iPhone 5 represented yet another important redesign of the iPhone.

With the iPhone 5, Apple expanded its smartphone's screen size to four inches, a noticeable upgrade from the 3.5-inch display found on its predecessors. That was especially important considering Apple was competing with Android devices from Samsung and others that offered larger screens.

The iPhone 5 was also the first Apple smartphone to come with the Lightning charging port, which is still present on today's iPhones. 

The iPhone 5S was Apple's first smartphone to come with the Touch ID fingerprint sensor in the home button, which remained a staple on the company's phones until it launched Face ID on the iPhone X in 2017.

Touch ID represented a shift away from requiring that the user type in a passcode each time they wanted to unlock their phone that's persisted throughout the industry in the years since.

Apple also launched the colorful iPhone 5C that year, which was positioned as a less expensive alternative to the flagship iPhone 5S. It came in an array of bold colors, like blue, green, and yellow, and was $100 less expensive than the 5S model.

Compared to the iPhone 5S, the iPhone 5C lacked a fingerprint sensor, ran on a previous-generation processor, and had a plastic body compared to the iPhone 5S' aluminum build. It was significant because it represented the first time Apple gave iPhone shoppers a cheaper alternative to choose from, potentially setting a precedent for devices like the cheaper iPhone XR and iPhone 11 down the line. 

The iPhone 6 and iPhone 6 Plus signaled another crucial turning point in the iPhone's history.

The launch of the larger-screened iPhone 6 Plus represented another expansion of the company's smartphone lineup, giving consumers the opportunity to choose between two different screen sizes for the first time. That was especially important considering Android smartphones were offering increasingly larger screen sizes while the iPhone's display had remained at four inches for several years.

The iPhone 6 and 6 Plus also sported a redesign that the company retained, for the most part, until 2017, when it transitioned to the bezel-free look introduced with the iPhone X. Otherwise, the iPhone 6 introduced a faster processor and larger storage options. 

The iPhone 6S and 6S Plus were a minor update to the iPhone 6 that added a new feature called 3D Touch, which made it possible to access shortcuts by pressing more deeply on the display.

Otherwise, the phone included a faster processor and a better 12-megapixel camera. 

Apple released the iPhone SE in 2016, a less-expensive alternative for shoppers who were looking for an iPhone that was smaller and cheaper than the iPhone 6 or iPhone 6S.

The iPhone SE had a four-inch display like the older iPhone 5 and 5S and ran on the same processor as the iPhone 6S, which was Apple's newest flagship at the time. 

With the iPhone 7 and iPhone 7 Plus, Apple marked the end of an era by removing the headphone jack. They were Apple's first pair of iPhones to come without the 3.5mm port and instead required headphones to be connected through the Lightning slot. Apple also introduced its popular AirPods wireless earbuds that year.

Apple may have not been the first company to release a headphone jack-less smartphone, but it quickly became the industry standard following the iPhone 7's launch. AirPods have skyrocketed in popularity since then too: the company sold 27 million pairs during the most recent holiday season alone, Apple analyst Ming-Chi Kuo estimated.

The iPhone 7 Plus was also the first iPhone to include a dual camera and Portrait Mode, the feature that makes the subject of an image look sharp against a slightly blurred background. The iPhone 7 and 7 Plus were Apple's first smartphones to come with water resistance. 

The iPhone 8 and 8 Plus were among the first iPhones to include wireless charging. They also featured a new glass design that represented a departure from the aluminum-built phones Apple had been selling for years since the iPhone 5. 

The iPhone X was a pivotal release for Apple. Launched alongside the iPhone 8 and iPhone 8 Plus, it was Apple's first smartphone to include a nearly edge-to-edge OLED screen, support for facial recognition, and no home button.

It set the precedent for the look and feel of Apple's current iPhones, and it was also Apple's first smartphone to come with a $1,000 starting price. 

The iPhone XS and iPhone XS Max were the successors to the iPhone X, adding a faster new processor, better water-resistance, and an improved version of Portrait Mode.

They weren't drastically different than the iPhone X, but they provided further evidence that Apple planned to stick with the nearly all-screen design introduced in the iPhone X for its future flagships. 

Apple also launched the iPhone XR alongside the iPhone XS and XS Max, which came in a wide range of colors and cost roughly $250 less than the iPhone XS.

The iPhone XR was positioned as a less-expensive alternative to Apple's flagship iPhones, offering a full-screen design at a price that's easier to digest than the $1,000 iPhone XS. It lacked the OLED screen and dual camera found on Apple's iPhone XS, but was otherwise pretty similar to its pricier sibling. 

The iPhone 11, with its relatively low $700 price point and wide range of color options, was essentially Apple's successor to the iPhone XR.

It featured a new dual-camera system that includes an ultra-wide-angle lens and support for night mode, plus a faster processor and a higher-resolution front-facing camera. 

Apple's pricier iPhone 11 and iPhone 11 Max were its first iPhones to come with a triple-lens camera: a wide-angle camera, ultra-wide-angle camera, and telephoto lens. When announcing the phone during its annual September event, the company positioned it as being the ultimate mobile camera for professional photographers and videographers.

The phone also came with a new matte finish and an overhauled camera sensor, representing a slight redesign compared to the iPhone XS and iPhone XS Max. 

The iPhone got a design refresh once again with the debut of the iPhone 12 in 2020. 

Gone were the rounded metal edges Apple had used on the iPhone 6 — in their place was a sleek, squared-off design reminiscent of some of Apple's earlier iPhones. Apple also added its higher-end OLED display to the standard iPhone, as well as camera improvements, 5G connectivity, and compatibility with its MagSafe accessories. 

The iPhone 12 also came in a cheaper Mini size, seemingly a callback to the beloved iPhone SE. 

Like the standard iPhone 12, Apple's Pro models got a design upgrade that year that that gave them a stylish, high-end feel. 

The pricier models also got larger screens than their predecessors, the iPhone 11 Pro and Pro Max, as well as an improved triple-lens camera system, augmented-reality capabilities, a faster processor, and better battery life. 

Compared with the design revamp of 2020, Apple's base-model iPhones in 2021 offered incremental improvements: namely, a brighter display, new camera modes, and better camera performance.

Perhaps the biggest upgrade over previous models was the battery life. The iPhone 13 came with a bigger battery, a more-efficient display, and better power efficiency thanks to its improved processor. 

The iPhone 13 Pro also got a battery-life upgrade in 2021, capable of streaming video for over 16 hours, according to Insider's test. Otherwise, the 13 Pro and Pro Max offered speedier performance and best-in-class camera quality. 

Apple's new iPhone 14 Plus has a new larger 6.7-inch screen, which is the same size as that of the iPhone 14 Pro Max. Both the iPhone 14 and the iPhone 14 Plus have better battery life, improved cameras, and are transitioning to a no-SIM card tray. 

The iPhone 14 lineup is also debuting with a new emergency satellite SOS system that lets users connect to satellites and alert emergency services, as well as a crash detection function that recognizes when you're in a collision.

They start at $799.

The notch on these two models is pill-shaped, a significant move for Apple, which has historically opted for a more rectangular shape.

The notifications will also look different and will appear on the notch in what the company is calling Dynamic Island.

The camera features a 48-megapixel sensor instead of a 12-megapixel one, a first for Apple.

The Pro models start at $999.

Lisa Eadicicco contributed to an earlier version of this article.