The Apple iPhone 6 Plus is now official. It's built around a 5.5" IPS LCD display with an Retina HD resolution (1920 x 1080 pixels or, in other words 1080p). The pixel density is 400 ppi and iOS 8 has been tweaked to take full advantage of the larger display.The back of the iPhone 6 Plus is made of anodized aluminum and the stainless steel frame of the phone ensures its rigidity.The new 64-bit A8 chip that powers the Apple iPhone 6 Plus is built using the 20nm manufacturing process. Thanks to this it's more power efficient, while still offering 25% more CPU power and 50% GPU boost.The iPhone 6 Plus supports 20 LTE bands, but only 150Mbps cat4 LTE, rather than the latest 300Mbps Cat 6. On the positive side the phablet comes with VoLTE and Wi-Fi 802.11ac, which promises 3x faster Wi-Fi compared to the iPhone 5s. Wi-Fi calling is also a new feature, which will work on T-Mobile in the US and EE in the UK.At the back, the iPhone 6 Plus uses a 8MP iSight camera with a True Tone dual LED flash. The pixel size is the same as on the iPhone 5s at 1.5μ and the aperture is unchanged at f/2.2. However the iPhone 6 Plus has an optical image stabilization - a first for the company.There's also phase-detection autofocus that should improve focusing speed twice. It is enabled by the A8 chip, which also includes powerful image signal processor designed by Apple.The Apple iPhone 6 Plus camera records 1080p video at 30 and 60fps. There's a slow-mo shooting available, too, at 240fps, but its resolution hasn't been specified.