<P> iPhone 7's home button uses a capacitive mechanism for input rather than a physical push - button, as on previous models, meaning direct skin contact (or a capacitive glove) is required to operate the device . Physical feedback is provided via a Taptic Engine vibrator, and the button is also pressure - sensitive . iPhone 7 retains the "3D Touch" display system introduced on the iPhone 6S, providing pressure - sensitive touchscreen input . </P> <P> The iPhone 7 does not feature a 3.5 mm headphone jack; it was replaced by a second speaker grille that serves as a vent for the internal barometer . A Lightning - to - 3.5 - mm - connector adapter, as well as in - ear headphones that use the Lightning connector, are bundled with the device, and the adapter is also sold separately as an accessory . The adapter is also compatible with other iPhone, iPad, and iPod Touch devices running iOS 10 . </P> <P> iPhone 7 uses the Apple A10 Fusion 64 - bit system - on - chip, which consists of two low - power cores and two high - power cores (only two cores are used at any point in time). The A10 chip also features a hexa - core graphics chip capable of "console - level gaming". As with prior models, iPhone 7 is available in two sizes: one with a 4.7 - inch screen, and a "Plus" variant with a 5.5 - inch screen . The displays have identical sizes and resolutions to iPhone 6S, but with a wider color gamut and increased brightness . The screen - to - body ratio is about ~ 66% and ~ 68% for the 7 and 7 Plus, respectively . </P> <P> Both device variants also contain a new iteration of Apple's motion coprocessor, the M10 . Unlike previous iPhone models, internal storage options for iPhone 7 begin at 32 GB instead of 16 GB, and max out at 256 GB . iPhone 7 Plus offers 3 GB of RAM, more than any other previous iPhone; the 4.7 - inch iPhone 7 has 2 GB . </P>

What is the size of a iphone 7 plus