Product Summary: Apple Inc. iPhone 6s PlusThe iPhone 6s Plus marks a significant upgrade from its predecessor, the iPhone 6 Plus, with several advancements in design, performance, and capabilities that enhance the user experience.**Design and Build:**While maintaining the overall aesthetic of the iPhone 6 Plus, the 6s Plus introduces a more robust aluminum chassis made from 7000 series aluminum, which provides greater durability and resistance to bending. The device is available in new color options, including Rose Gold, alongside the existing Gold, Silver, and Space Grey.**Display:**The iPhone 6s Plus features the same 5.5-inch Retina HD display with a resolution of 1920 x 1080 pixels, but it now incorporates 3D Touch technology. This innovative feature allows users to interact with their device in new ways by recognizing different pressure levels on the screen, enabling Quick Actions and Peek and Pop functionalities.**Performance:**Powered by the A9 chip, the iPhone 6s Plus offers a remarkable performance boost over the A8 chip found in the iPhone 6 Plus. With a 70% increase in CPU speed and a 90% increase in GPU performance, users can enjoy seamless multitasking and graphically intense applications and games. The device also includes improved energy efficiency, contributing to better battery life.**Camera:**The camera system has seen notable enhancements, with the iPhone 6s Plus featuring a 12MP iSight camera capable of shooting 4K video, a first for the iPhone lineup. The new sensor supports advanced features like optical image stabilization for photos and videos, ensuring clearer and sharper images in various lighting conditions. Additionally, the front-facing camera has been upgraded to 5MP and now includes a Retina Flash for improved selfies.**Software Features:**Running on iOS 9 out of the box, the iPhone 6s Plus benefits from a suite of new software features, including improved multitasking capabilities, enhanced Siri functionality, and a more intuitive interface. With features like Proactive suggestions and better integration with apps, users can enjoy a more personalized experience.**Storage Options:**Apple has also adjusted the storage options for the iPhone 6s Plus, offering models with 16GB, 64GB, and 128GB of storage. This range provides users with flexibility to choose the capacity that best fits their needs, particularly with the increased demand for space due to high-resolution photos and videos.**Conclusion:**The iPhone 6s Plus emerges as a powerful upgrade over the iPhone 6 Plus, with advancements in durability, performance, camera capabilities, and user interactions through 3D Touch. These enhancements make it a compelling choice for users seeking a premium smartphone experience.