One of the most power-hungry components on an iPhone is the screen. Battery life on the iPhone is naturally extended by turning off the screen whenever possible. This is why the device is normally set to auto-lock after a minute or two. Many iPhone owners don't bother to manually lock, so this feature keeps our devices secure as well.
One of the key new features previewed in last week's iOS 9.3 beta is Night Shift. The basic premise is that blocking blue wavelengths of light after the sun has set improves sleep. This blue light is normally generated by iPhone, iPad and other mobile device screens, simulating sunlight. By reading iBooks in the evening or playing video games late into the night, circadian rhythms are disrupted. Night Shift addresses this problem, however it's by no means the first software to tackle the issue.
The excellent software package f.lux automatically adjusts the color temperature of computer and mobile device screens at night. Not only does this prevent your iPhone screen from blasting bright blue light during nighttime hours, it can help with eyestrain and sleep patterns. Unfortunately, the only option to run f.lux on an iOS device is to jailbreak. Now, thanks to iOS 9 and Xcode it's possible to sideload apps onto a device without using the App Store. This is where the app Gamma Thingy comes into play.
The iPhone 6 marks the second time Apple has expanded the iPhone display size. When the iPhone 5 increased screen real estate, it took some time for developers to complete updates to existing apps. Optimized for the iPhone 5 was a common refrain in the App Store. In the meantime, many apps were simply letterboxed to allow them to function properly.
There are still many apps that have not been optimized for the iPhone 6 and iPhone 6 Plus displays. These screens are significantly larger than the iPhone 5 family of devices, and in some cases the old apps just don't look right. Thanks to the tweak ForceGoodFit, jailbreakers can enhance the usability of older apps on the iPhone 6 and iPhone 6 Plus.
As is the case with every new Apple wallpaper that comes along, Apple fans are quickly scrambling to get their hands on the image as soon as it appears in the wild. The situation has been much the same with the new iPad wallpaper that was shown off at yesterday's iPad keynote.
The iPad Guide has posted an iPhone-sized copy (320 x 480) of the iPad wallpaper that can be downloaded to your computer or directly saved to your iPhone camera roll from Safari.