3.5 Headphone jack, sound system was not impressing then other iPhone serious, earpods and other lithingconcetor display size was 4.7 inch less the other smart phone, retina HD display, LED backlit IPS, operating system was IOS 10, and process type was A10 fusion chip with 64 bit Architecture internal storage was 32 GB, primary camera was 12 megapixel, secondary camera was 7 megapixel, touch id was fingerprint sensor three-axis gyro sensor was, the price of iPhone 7 market value was down by appears to time 57, 000 was available price.