There is no physical damage to my Apple iPhone, and the carrier is not the source of the problem yet my sound is cut off in the call. How can I resolve these sound issues?

If you're experiencing persistent sound issues with your Apple iPhone, such as no sound, distorted audio, crackling, or poor sound quality during calls, follow these troubleshooting steps to resolve the problem:
• Check the iPhone Ring/Silent Switch: Make sure the switch is not in silent mode (no orange). Swipe down from the top-right corner of an iPad to open Control Center and disable Silent Mode.
• Your device's screen protectors, films, or cases may be blocking the speaker.
• Inspect Speaker Openings: Check for blocked or dirty device speaker openings. Check the iPhone receiver for blockage or dirt. Use a clean, dry, soft-bristled brush to clean the speaker or receiver opening.
• Make Sound Changes: Move the Ringer and Alerts slider a few times in Settings > Sounds (or Sounds & Haptics) to test sound. If the slider is dimmed or the speaker is silent, it may need service.
• Test Speakerphone: Call your iPhone and enable speakerphone. Call FaceTime on an iPad or iPod touch. Voice issues like static or crackling may be related to your network or reception. Call again later or from another location.
If none of the above solutions work, it's essential to entrust technical issues to professionals. Consider taking your iPhone to an authorized service center to ensure you don't compromise your warranty rights. Also, write here to attract attention and see if others have anything to say.