Measuring in at 4.7 and 5.5-inches, the iPhone 6 and the iPhone 6 plus dwarf previous iPhone models, but at the same time, the two phones are Apple's thinnest yet, measuring in at 6.9 and 7.1mm, respectively. For comparison's sake, the iPhone 5s was 7.6mm thick.
According to Apple, the thinner profile was made possible by the company's "thinnest display yet," which is made of slightly curved glass designed to flow seamlessly into the body of the device to highlight the "Retina HD" screen of the iPhone 6 and iPhone 6 Plus.
Both devices include prominent antenna bands on the back enclosure, along with a protruding rear lens. The volume buttons are pill-shaped, much like the buttons on the iPad Air, and the power button has been relocated to the right side of the device.
RETINA HD DISPLAY
iPhone 6 rumors largely suggested Apple would use a sapphire display cover in the device, but that turned out to be false. Instead, the iPhone 6 and the iPhone 6 Plus use "ion-strengthened" glass with an improved polarizer (for better outdoor viewing) and a photo aligned IPS liquid crystal display.
The iPhone 6 has a 4.7-inch display with a "2x" resolution of 1334 x 740 (326 ppi) while the iPhone 6 Plus has a 5.5-inch "3x" resolution of 1920 x 1080 (401 ppi). Both phones are said to offer higher contrast, better brightness, and improved white balance.
Apple has implemented several "Reachability" features to improve the viewing experience on its larger devices, including Display Zoom and landscape view (iPhone 6 Plus only). Display Zoom lets users zoom in to get a closer view at their apps, while standard zoom displays more content on the screen.
Landscape view on the iPhone 6 Plus is designed to make the most of the 5.5-inch screen and to help users be more productive. When in landscape mode, the device will display apps like Mail, Calendar, and Stocks in a wider view similar to the way they're displayed on the iPad.
BATTERY LIFE
The iPhone 6 and the iPhone 6 Plus both offer improved battery life, but due to the larger size of iPhone 6 Plus, it is able to accommodate a larger battery. While the capacities of the two batteries are unknown, previous rumors pointed towards 1,810 mAh capacity for the iPhone 6 and a 2,915 mAh capacity for the iPhone 6 Plus.
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Because it has a bigger battery, the iPhone 6 Plus has a longer battery life than the smaller iPhone 6. 3G talk time for the iPhone 6 Plus is at 24 hours, compared to just 14 hours in the iPhone 6, for example, while HD video playback is at 14 hours for the iPhone 6 Plus and 11 hours for the iPhone 6.