MOV File Audio Issue on iOS

I'm having trouble with an MOV video file that's not playing audio on my iOS mobile device. I need the audio to play at the same time the video is playing.

Issues:
- Video type: MOV
- Playback device: iOS mobile device

Skills and experience ideal for this job include:
- Proficient understanding of MOV file format
- Experience with iOS troubleshooting
- Knowledge in audio/video synchronization issues
- Familiarity with mobile device media playback troubleshooting