Apple's next-generation iPhone 6s should measure 7.1mm deep, a 0.2 millimeter increase versus the current-generation iPhone 6, which measures 6.9mm deep. If true, the 4.7-inch iPhone 6s will have the exact same thickness as the 5.5-inch iPhone 6 Plus, according to a purported schematic leaked Monday to Engadget Japan by a reliable source in the Chinese supply chain.
KGI Securities' analyst Ming-Chi Kuo previously said that an imperceptible increase in thickness was necessary to accommodate Apple's implementation of force sensing on the iPhone 6s and iPhone 6s Plus's screen.