Apple iPhone 6s Plus: the specs review

Display

Save from the addition of pressure sensitivity, which we will refer to in a minute, the screen on the iPhone 6s Plus is virtually unchanged from what the one before it. This is a 5.5-inch panel with the ubiquitious 1080x1920 resolution, which accounts for a sufficient pixel density of 401 pixels per inch. It's a fine example of an IPS LCD screen, even if its properties don't have the sheer impressiveness of Samsung and LG's Quad-HD displays, not to mention the Sony Xperia Z5 Premium's outlandish 4K screen. While we don't the have exact display measurements, we expect what has become typical of Apple screens — a tolerably cool color temperature, nicely evened out color balance, near perfect gamma response, and fantastic viewing angles. It is these characteristics, and not obscenely high pixel counts or super wide color gamuts that make for a high quality display, though we don't have anything much against the latter!

Now, about that Force Touch thing we mentioned. Borrowed from the new MacBook's trackpad and the Apple Watch before it, the technology relies on tiny electrodes surrounding the display that let users deliberately choose between a light tap, a press, and a "deeper" press, triggering a range of specific controls. In the Apple Watch, we saw how pressing firmly on its screen brings up additional controls in apps and allows for additional interaction. Right now, the technology is merely being toyed with and emulated by other manufacturers, such as Huawei, but as a the first new frontier in interactive surfaces since multi-touch, its potential could expand to building fingerprint sensors and other interactive elements inside screens. It could potentially let Apple get rid of the home button one day, although removing such a long-standing element would have to make for quite the decision.

Processor and Memory

The iPhone 6s Plus introduces a major hardware upgrade in the form of the new A9 chipset and an increase to 2GB of RAM memory. The A9, which is fabricated by Samsung and TSMC's foundries, has not been properly documented yet. However, we know that the chip is produced on a 14nm or 16nm process, rather than the A8/A8X's 20nm process. Thanks to that, the A9 packs more transistors on the same surface area as the A8, theoretically boasting better performance and power efficiency characteristics.

Some early benchmarks that originate from a Chinese source suggest that the A9 enjoys an around 19% jump over the A8, and a 6% improvement over the A8X in single-core performance, in addition to a 69% multi-core improvement over the A8 (8% from the A8X). That sounds like a steady growth in processing power, certainly in the ballpark of what could be expected of Apple. Moreover, we've heard that the A9 relies on a quad-core setup, with two cores pushed to 1.7GHz and two cores at around 1.2GHz. The A8X before it uses a triple core design, so this leap is certainly within the realm of possibility.

To provide another perspective, the Apple A9 could very well be in the same league as the 2009 iMacs, 2010 MacBook Pros, and 2011 MacBook Airs in terms of raw performance, yet more power-efficient to the point of not requiring external cooling. However, this is mostly speculation we're dealing here, so hold your horses until we're able to throw more reliable information your way!

Memory-wise, the iPhone 6s Plus comes with either 16GB, 64GB, or 128GB variants. It still uses eMMC solid-state technology, so don't expect SSD-like reading and writing speeds.

Camera

The iPhone 6 Plus' camera setup was somewhat aged upon the handset's very reveal, so an upgrade in this important category was long due. What do you know, Apple finally delivered — a restrained, but certainly well thought-out 12MP rear camera bump (up from 8MP), and a comparatively generous increase to 5MP for the front cam (from just 1.2MP). Photo quality improvements aside, the most notable new addition is 4K (3840x2160) video recording, which puts the iPhone's camcorder on par with Android flagships.

The 12MP imaging sensors are sourced from Sony, and there's little that we know about them at this point, other than that they incorporate RGBW subpixel technology for better low-light performance. This technology uses an extra white (W) subpixel, arranged alongside the RGB sub-pixels, to compensate for the smaller-sized pixels in the sensor. We've seen a sensor of this type in action with the Huawei P8, and we came off pretty satisfied with the way it handled itself across different scenarios. However, RGBW itself didn't make for stand-out photographic performance in any regard. It will be up to the ones responsible for the camera algorithms at Apple to make the most out of the camera sensor.

A notable difference between the iPhone 6 Plus and its minute compatriot is the addition of an optical image stabilization module in the former. In the large one, it is enabled while taking photos, but video shooting employs software image stabilization. It's probably the same ordeal with the iPhone 6s Plus.

Battery life

The iPhone 6s has a battery at about 2900-3000mAh capacity. Its predecessor managed to rack up a score of 5 hours, 22 minutes, which is far from the Galaxy S6 edge+'s impressive result, but still decent for most people. Unfortunately, the iPhone 6s couldn't catch up to the fast charging developments of Android for some reason. Maybe Apple is being complacent. Maybe integrating fast charging or wireless charging comes at the expense of something else that's more valuable to the typical iPhone user. Only the gang at Cupertino knows, but regardless, fast charging tech is pretty high on our list of iPhone demands, and the same goes for any other up and coming expensive smartphone, actually!

Conclusion

The iPhone 6s Plus goes pretty far for what's considered an incremental upgrade by Apple standards. The increase in hardware and camera power is quite welcome, and the addition of Force Touch makes for a nice usability improvement, not to mention being a classic case of Apple introducing polished (hopefully) new technology for users and app developers to tinker with. For what it is, the iPhone 6s Plus makes for a good, meaningful yearly upgrade over its predecessor.