Yes, the Samsung Galaxy S9 has a headphone jack

Samsung officially announced the Galaxy S9 today, and yes, as indicated by previously leaked images, there is a headphone jack. While many companies have opted out of including a headphone jack — the iPhone X, Pixel 2, and Huawei Mate 10 Pro — some, like Samsung, have continued to include the headphone jack and be... just fine.
Sure, Samsung could have readily ditched the 3.5mm connector, but why? As said before, wireless audio is fine, not great. No one is asking for headphone jack