The latest iPhone has a tougher look to it in an attempt to silence critics after some of the iPhone 6 models could be bent and damaged easily. There is a different feeling towards the iPhone 6S as some pictures leaked shows that it is a very solid structure.
The Sides of the iPhone 6S will increase in size meaning a higher cracking threshold. The actual weight of the new iPhone will decrease slightly however. There is a stronger aluminium meaning it would be very difficult for the phone to move out of place. There are other undisclosed precautions that Apple are taking to make sure that the bending issue if last year is one that stays in the past. These undisclosed precautions will likely be announced at the annual launching event which usually takes place in early September.