Many iPhone 6 users report that during incoming calls they can speak but the caller cannot hear them clearly or at all. This issue often points to a specific microphone or audio routing problem rather than a general call quality concern.
The following sections break down likely causes, targeted troubleshooting steps, component testing guidance, and real user questions so you can identify and fix the no-hearing problem quickly.
| Symptom | Likely Cause | Quick Check | Next Action |
|---|---|---|---|
| Caller hears nothing or very faintly | Microphone gasket or ribbon cable loose | Use Voice Memos on device | Inspect connectors and reseat cable |
| Caller hears background noise but not voice | Software audio routing or noise cancellation | Check microphone mute in Control Center | Reset settings or update iOS |
| No sound in speaker but caller hears you | Earpiece or audio path issue | Test speaker with music or speakerphone | Clean earpiece mesh or service check |
Diagnosing Incoming Call Microphone Failure
Start by confirming whether the device fully cannot hear you or only parts of your voice are missing. During an active call, open Voice Memos and record a short clip to see if the microphone captures sound at all. If Voice Memos works but the caller still cannot hear you, the problem is likely routing or software rather than a dead microphone.
Physical Inspection and Quick Fixes
Dust, lint, or a loose microphone ribbon cable can silently break incoming audio without affecting outbound calls or Voice Memos. Use a bright light and magnifier to inspect the bottom microphone grill at the edge of the device. If debris is visible, power off the phone and gently brush or aspirate the opening before testing again.
- Test Voice Memos before and after cleaning to confirm change
- Reseat the microphone ribbon cable near the display connector carefully if comfortable
- Try speakerphone and headset to isolate which microphones are affected
- Update to the latest supported iOS version and retest calls
Software Settings and Routing Checks
Check that the microphone has not been muted or rerouted by accessibility settings or third-party call-handling apps. In Settings, review Call Audio Routing for any forced use of headset or speaker that might confuse the cellular baseband. Also verify that Change with Buttons is enabled only for volume and not accidentally tied to microphone mute in older iOS builds.
Component-Level Testing Guidance
If basic cleaning and software resets do not restore incoming audio, you may need to evaluate specific components. Use the following table to plan bench tests or communicate clearly with a repair technician.
| Component | Test Method | Tools | Interpretation |
|---|---|---|---|
| Bottom microphone | Record in Voice Memos while device lies flat | Voice Memos, speaker playback | No voice input points to mic or ribbon |
| Receiver earpiece | Play audio with headphones disconnected | Music, phone speaker test | Crackling or low sound indicates receiver issue |
| Audio processing chip | Test across multiple calls and apps | Calls, Voice Memos, Speaker | Consistent failure across apps suggests chip or firmware |
When to Seek Professional Repair
Persistent incoming call microphone failure after software cleanup usually points to a hardware fault, such as a disconnected ribbon, cracked flex, or failed microphone array module. If you are not comfortable disassembling the device, book an authorized service provider or reputable independent shop for the iPhone 6. Describe exactly that the caller cannot hear you during incoming calls while Voice Memos works, as this helps technicians prioritize microphone and ribbon checks.
Preventive Maintenance and Final Checks
Use consistent care, periodic cleaning, and routine software updates to reduce the risk of future microphone issues. When problems reappear, repeat the quick checks before assuming a major component failure.
- Keep microphone grill clean and free of case debris
- Update iOS regularly to benefit from audio fixes
- Test Voice Memos monthly to catch mic issues early
- Use original or MFi-certified accessories to avoid routing problems
FAQ
Reader questions
Why can the caller not hear me during incoming calls when I can hear them fine?
The most common cause is a microphone connectivity issue specific to the call microphone chain, while speaker and Voice Memos paths remain intact.
Does turning off noise cancellation help restore caller hearing?
It can help if aggressive processing is muting the incoming voice; test with and without noise suppression features in Settings.
Can a software update fix the issue without repair?
Yes, Apple has fixed audio routing bugs in past updates, so updating to the latest supported iOS version is a critical first step.
Is it safe to resolder the microphone ribbon myself on iPhone 6?
Only attempt if you have experience with microsoldering; improper reassembly can damage the display or logic board, and many find professional repair more cost-effective.