Good Afternoon jenniffer178,
We see that you're unable to hear audio when you AirPlay from your iPhone to LG TV, and we'd like to look into this with you.
So we can have a better understanding of this, could you answer the following questions?
- Are you AirPlaying, or are you mirroring the screen to the TV?
- Do you see that regardless of what type of video or app you use that the sound isn't working?
- When you display to your TV, does adjusting the volume on your iPhone change anything?
In addition to this, check out the following resource just to confirm that these are the same steps you're using for AirPlay with your TV:
Use AirPlay to stream video or mirror your device’s screen
We look forward to hearing back from you.
Have a great day!