3 ms·It makes IP68/69 waterproofing standard difficult to achieve. I suspect that is the main driver.by thawkins 8y agoIt makes IP68/69 waterproofing standard difficult to achieve. I suspect that is the main driver.steve19 8y agoI don't think it does. It just exposes three (4?) contacts. Less than a USB port. There have been plenty of waterproof phones with jacks.ewoodrich 8y agoGalaxy S7 and above are IP68 rated and still have a headphone jack. iPhone X is still IP67 w/o a headphone jack.