the ps4 controller doesn't have a built-in mic, so the short answer is, you can't. you can however plug a set of earbuds or other wired headset that has a 3.5mm jack into the bottom of the controller. if you use earbuds or a headset that has a mic, then the mic will work on ps4.
How do I turn my mic on on PlayStation 4?
To change the settings of your microphone, navigate to the audio menu of your PS4. Navigate to Settings > Devices > Audio devices.Dec 1, 2021
What kind of mic works with PS4?
Best answer: Any USB microphone will work with your PlayStation 4. You can use a USB headset or, if you are looking to stream your gaming, you can use a good desktop mic to give you the best sound possible.May 16, 2019