Apples tagline for the iPhone 6S is the only thing thats changed is everything, highlighting that the brand knows this is a phone that looks an awful lot like 2014s model.
It makes sense that Apple would try its hardest to show that, despite the handset looking identical to the iPhone 6, there have been loads of changes under the hood that make this an attractive phone in its own right.
The chassis is stronger, the camera sharper - with a new Harry Potter-esque way of capturing your snaps - and theres even a completely new way of interacting with the screen. On paper, its an impressive upgrade.
See the iPhone 6S in action in our video review:
Low Power Mode
Finally, iOS 9 offers the chance for you to extend your iPhone battery life further by simply tagging an option in the settings.
The move will disable certain aspects like the phone constantly listening out for you saying Hey Siri, or keeping your mail updated in the background.
iPhone 6S review
In fact, if youre not bothered about the phone constantly listening for your Hey Siri voice command, I couldnt really see a problem with using Low Power Mode all the time - apart from the fact the battery colour moves from green to yellow to signify that the phone is in the lower effort mode.
Theres no option to toggle it on and off in the Control Centre at the bottom of the screen, which means youll need to head into the settings to disable it. However, when your phone reaches around 80% charge the iPhone will automatically offer to turn it off for you, as its decided that its got enough power to see it through whatever youre going to be doing next.
Its a real shame that the iPhone 6S battery life isnt a little bit better - its making me wonder how much that 3D Touch system is impacting on the power management. If its a lot, then youll have to hope that the improvement in the interface as developers get on board is worth it.