Hi nhdac,
welcome to the Apple (user-to-user) Community!
Re: "no voice with hearing aids" : "regularly people on the other end say they can't hear me" : "Looking for a fix"
You may want to check that "mute" is not accidentally on during a phone call:
See: Apple support's article: While on a call on iPhone - Apple Support
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Seems you may need to adjust the iPhone settings, and set the microphone volume for your hearing devices.
There are a few ways you can access the settings"
- In Settings: Go to Settings > Accessibility > Hearing Devices > MFi Hearing Devices.
- By triple-clicking a button: With Accessibility Shortcut if you’ve set it up.
- In Control Center: Tap . (If you don’t see , you can add it to Control Center.)
- On the Lock Screen: Go to Settings > Accessibility > Hearing Devices > MFi Hearing Devices, then turn on Control on Lock Screen.
From the Lock Screen, you can do the following:
- Check battery status.
- Adjust ambient microphone volume and equalization.
- Choose which hearing device (left, right, or both) receives streaming audio.
- Control Live Listen.
- Choose whether phone and media audio are routed to the hearing device.
- Choose to play ringtones through the hearing device.
Above info. comes from the complete article: How to: Use hearing devices with iPhone - Apple Support
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If needed: Clear the microphones
- Remove any screen protectors, films, or cases from your iPhone.
- Clear any debris from the openings of your iPhone.
All the best :-)