iPhone 13 Pro Microphone Not Working During Calls: Diagnosis
Validated by Luca Chia, Certified Electronic Technician
Revision of 19/05/2026
WARNING: This device contains lithium batteries. Improper puncturing or bending during disassembly can cause explosions or flames. The intervention requires precision, and the assistance of a specialized technician is recommended.
iPhone 13 Pro Microphone Not Working During Calls
The iPhone 13 Pro microphone is not working during calls, often manifesting a "muted error" after an iOS update. This issue can stem from software or hardware causes.
Causes & Probability:
- Software Glitch/Corrupted Update (50%): An iOS update can introduce bugs or corrupt audio drivers. Often, other microphone functions (voice memos, speakerphone) might work correctly.
- Charging Port Flex Cable Damage (30%): The main microphone is integrated into the iPhone 13 Pro Charging Port Flex Cable. Wear, humidity, or pre-existing impacts can manifest after the stress of an update.
- Audio IC/Logic Board Failure (15%): Less common, but an issue with the Audio IC or logic board components can block microphone signal processing.
Quick Checks (User):
- Perform a forced restart of the device.
- Record a voice memo: if it works, the problem is likely related only to calls or the main microphone.
- If the problem persists, a factory reset (without restoring backup) can isolate software causes.
Key Signals: If the problem is exclusively during calls, it's more likely a software issue or a problem with the main microphone. If all microphone functions are muted, it could be a more extensive hardware failure. It often happens that an iOS update reveals a pre-existing hardware weakness.
Operational Decision: If restarting and the voice memo test don't resolve the issue, and the microphone only doesn't work during calls, try a software reset. If the problem persists, consult a technician to inspect the iPhone 13 Pro Charging Port Flex Cable or the iPhone 13 Pro Max Microphone Module.
Technician Output: Verify iOS integrity (DFU restore), individually test microphones (main, front, rear), visually inspect the charging port flex cable and connectors. Rule out Audio IC or logic board damage.