A popular belief is that the Apple brand is obsessed with making their iPhones thinner. After all, if the smartphones are thinner they can fit bigger batteries. However, with the iPhone 6S, Apple goes for the first time ever against this argument and previous trend. It seems that the new Apple iPhone 6S will be first ever iPhone bigger than its predecessor.
Engadget Japan has leaked some schematics of Apple's iPhone 6S which show that the smartphone will come in a small size increase, being 0.2 mm thicker than the iPhone 6. It will measures 138 mm x 67 mm x 7.1 mm, but at an overall size increase of under 3 percent this increase in dimensions should be imperceptible to most users.
However, the question is why would Apple decide to make their iPhone 6S thicker, when other recent confirmed leaks show that several key internal components will actually shrink due to miniaturization and better production technologies.
Of course, until official confirmation from Apple of until the official launch, it is impossible to be 100 percent certain, but one obvious contender for a size increase is the Force Touch technology. Numerous sources already confirmed the presence of Force Touch features in the new generation of iPhones. This is no longer rumors but certitude. The iPhone 6S' increase in thickness seems to match the need for an additional 0.2 mm thick layer on the display, in order to integrate the hardware behind Force Touch.
Force Touch, a feature already available on the MacBook Pro line and Apple Watch, can detect contact pressure on the screen be used for a whole new array of potential input options, including burst photography, using Force Touch in camera mode in order to toggle between video and photography, real time lapse and slow motion, bringing up new shortcuts to reach areas in larger screens of the iPhone 6S, accelerating scanning through video playback, introducing multiple file selection and easier text selection in productivity apps, and create totally new control options for games.
Another reason for the slight width size increase could be a bigger battery. However, this is a less probability, since the leaked iPhone 6S chassis obtained last week by 9to5Mac seems to be identical to the iPhone 6, besides changes to the mounting points of the internal components. Given the expected increase in iOS 9's power efficiency, it is more probable the improvements to come from software optimization rather than any physical battery capacity upgrades.
