iPhone through the ages: the original to the iPhone 13 – how much has it changed?

iPhone 6/6 Plus (8th generation)

Launched: September 2014

After the smaller changes that came with the iPhone 5C and iPhone 5S, Apple was back to its revolutionary best with the following generation, as the iPhone 6 and iPhone 6 Plus brought the biggest alterations in design and features since the leap from the iPhone 4S to the iPhone 5.

The most striking change the eighth generation iPhones ushered in was undoubtedly the screen size, with the iPhone 6’s display leaping from the iPhone 5’s 4 inches to 4.7 inches. Apple also upped the resolution from the 1136 x 640 of previous iPhones to 1334 x 750. This meant that the larger screen still had a high pixel density of 326ppi (pixels per inch), so image quality was incredibly sharp and detailed.

As the name suggests, the iPhone 6 Plus went even larger, with a whopping 5.5-inch display, marking Apple’s first foray into the phablet market. The iPhone 6 Plus also got a resolution boost to full high definition, 1920 x 1080. With a pixel density of 401ppi, not only does the iPhone 6 Plus have the largest screen of any iPhone ever, but it also has the clearest.

The iPhone 6 and iPhone 6 Plus also benefit from Apple’s use of “dual-domain pixels”, which along with the 1300:1 contrast ratio makes the screen on the handsets look absolutely fantastic.

Both the iPhone 6 and the iPhone 6 Plus also ditched the industrial and sharp-edged design that had been with the iPhone for four generations, in favour of a more ergonomically-pleasing chassis with a screen that curves into a body with rounded edges and corners.

Both handsets feature metal backs, and as we pointed out in our reviews, they take a lot of design language from the iPad Air, resulting in a product that looks and feels genuinely premium.

Another big change is that the boosted screen sizes and the corresponding increase in body dimensions have meant that the power button now resides on the right-hand side of the devices.

Along with the launch of the iPhone 6 and iPhone 6 Plus Apple, released iOS 8, which kept many of the flat aesthetics of iOS 7 and ushered in some neat new features.

It wasn’t a completely smooth launch, however, and after only a few months Apple has already patched it to iOS 8.1.3 in a bid to squash bugs and fix problems.

The rocky launch of iOS 8 was in stark contrast to the assured releases of the iPhone 6 and iPhone 6 Plus, with Apple proudly announcing that the two iPhones broke the company’s records for pre-orders in the first night they were available.