what is the difference between the iphone 6 plus and 6s plus?
Same size and resolution display but iPhone 6S Plus adds 3D Touch. The iPhone 6 Plus was the device that took Apple into phablet territory with its 5.5-inch display. ... Both the iPhone 6S Plus and the iPhone 6S feature Full HD resolutions at 1920 x 1080, which means a pixel density of 401ppi.