Yes, It uses 3.5 mm jack unlike iphone 7. For more description you can follow the below link: OnePlus 5. read more
OnePlus 5 The OnePlus 5 was first revealed on June 20, 2017 as the company's successor to the OnePlus 3T. Since OnePlus is a Chinese company, they opted to skip the number '4' in their line-up due to the unlucky association with death in China. read more
Many flagship smartphones are ditching the traditional 3.5mm headphone jack in favor of a single connector, which is very often the latest USB Type-C port. However, for all those that can't imagine having a phone without the 3.5mm jack, OnePlus's co-founder Carl Pei has confirmed that the OnePlus 5 will keep the headphone jack. read more
Another story to end a rumor that is flowing around. Or rather a few leaks that suggest that the OnePlus 5 is not going to have a headphone jack. These are all the leaks that show some cases of the device, which isn’t actually the final device so the leaks are all wrong. read more