If the problem is caused by software defects or viruses, updating your iPhone X to the newest iOS version may help. Aside from adding new features and functionalities, updates often provide bug fixes to resolve issues caused by bugs on the device. The most recent iOS version released by Apple for later iPhone models is iOS 11.4. This would be the final version before iOS 12's big platform overhaul. Follow these procedures to see if the updated software version is available on your iPhone X: Go to the
Settings tab. Select General. Select the Software Update option from the menu.
If a new software version is available, you should receive an update notification. Make sure your device has enough battery and memory space before downloading and installing a new update. Make sure your iPhone is linked to the Internet as well. After that, proceed with the update download and installation procedure by following the on-screen instructions.
When the update is finished, make sure to reset your iPhone X. This will prevent your device or any apps from acting up as a result of the new adjustments. Then check to see whether the audio on your iPhone X has been resolved.