Commiserations, antonie1970.
Am no expert in this area, yet Apple provides articles that may help troubleshoot.
Without pin-pointing the precise source of the issue from those possible, the solution may be any one of various options. May I offer a few suggestions to help trouble-shoot ?
✽ If you haven't already:
You may want to try restarting your iPhone to re-establish the connection.
If needed: How to: Restart your iPhone - Apple Support
Try turning Bluetooth off, waiting a little, turn Bluetooth back on.
NB: hearing aids can only be connected to one device at a time,
ie: they may be "switching" between active devices ..
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✽ You can check your settings to:
Route and automatically answer calls on iPhone - Apple Support
Eg: says:
- "Go to Settings > Accessibility > Touch > Call Audio Routing, then choose an audio destination.
- Tap Auto-Answer Calls, turn on Auto-Answer Calls, then set the duration of time before the call is answered by tapping or .
During a call, you can switch the audio routing from your hearing aid to the iPhone speaker by removing the hearing aid from your ear."
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Else:
Wondering if you have checked with your hearing-specialist , or with Phonac Support : ie: Their support website: https://product-support.phonak.com/s/?language=en_US
ie: maybe there's an app or firmware update available for the hearing aids. ?
If you want: You can also check "compatibility" on the above website ...
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There might be interference with other wireless devices.
Resolve Wi-Fi and Bluetooth issues caused by wireless interference - Apple Support
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Re: " ... the chime is also hurting my ears"
You can view Apple's advice on how to: Control your hearing device
Eg says:
"When your hearing device is connected to it, your Apple device can control microphone level (volume), audio presets, and more for your hearing device.
Find the settings here:
- iPhone or iPad: Go to Settings > Accessibility > Hearing Devices.
To see more settings, tap the name of your connected hearing device."
(You can try: Settings/Accessibility/Hearing Devices controls)
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If nothing above helps, and your hearing-aids continue to disconnect,
you can: contact Apple Support.
or
you might want to send feedback to Apple:
Apple's Feedback website: Product Feedback - Apple