Is your iPhone headphone jack not working? When people plug in their headphones, they expect to connect a call or listen to an audio. If the audio is unclear or inaudible, it can happen due to issues in the headset or the jack. The repairs in the former can be easily identified by connecting it to a different device. However, if the problem is with the jack, people must take the necessary proactive steps. These issues can be caused due to hardware or software issues. Here are some DIY tips to help users fix the iPhone headphone jack not working problem.