The iPhone 6S case is crafted from 7000 Series aluminium, which Apple says is the strongest alloy it has used in an iPhone. However, aside from doing a test where you repeatedly smash your iPhone 6S and iPhone 6 onto a concrete floor to see which breaks first, you won't really notice much difference in the build of the new model.
The iPhone 6S Plus is available in four colour choices: the original gold, silver and space grey, along with a new rose gold option.
The device is very thin for its size, measuring 158x78x7.3mm and weighing 192g. The handset has curved corners, making it comfortable to hold for long phone calls or while viewing media.
While its weight at 192g is heavier than some smartphones on the market - 49g heavier than the iPhone 6S and a 20g increase from the original iPhone 6 Plus - the overall proportions made it feel lightweight in our hands, as with a device that size, you'd expect it to feel heavier than it actually is. The extra weight is likely to be down to the addition of the 3D Touch technology in the display and the higher quality aluminium, both worthy updates in our view.
However, as with its predecessor, the smaller handed among us will find the length of the iPhone 6S Plus a disadvantage. We found typing quite awkward, as it was quite a stretch for our fingers to hit those keys in the middle of the keyboard when in landscape mode. It also makes the handset difficult to use one-handed, not ideal for train or bus journeys when you're standing up and trying to browse the web, or trying to use a navigation app to get directions while walking.
This is despite Apple taking account of one-handed use with its Reachability feature, so double-tapping the home button will pull down the top of the screen so it takes up only the lower half of the device.
This issue won't affect every smartphone buyer out there. Many of you will have larger hands or longer fingers, and there will be others who want a mobile mainly for playing games, viewing media or browsing the web with both hands available.
But for those of you needing to do lots of typing and currently using a smaller smartphone, we'd recommend trying the iPhone 6S Plus first to make sure it's comfortable to hold and use.
On the outside, Apple has made no changes to the buttons and ports compared with the original phablet. The iPhone 6S Plus power/standby button is on the right-hand side of the device, along with the Nano-SIM slot. The ringer on/off switch and volume controls are on the left; the volume buttons can also be used to take pictures from the camera app.
To Know More About iPhone 6S Plus review Click Here