Re: How do I enable Text Alerts on Hearing Aids : I have "system sounds" turned on in the accessibility settings
Am no expert in this area, yet your request deserves some response. Good to know you have system sounds turned on
✽ You can check your alert options : In the Settings app, tap Notifications > Messages.
and
✽ In Settings: Go to Settings > Accessibility > Hearing Devices > MFi Hearing Devices.
Check if there's an option for phone system sounds to be routed to the hearing device.
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✽ More info. if you want Siri's help to: Announce calls, messages, and more with Siri on iPhone - Apple Support
Siri can automatically announce incoming notifications from apps like Messages and Reminders. Siri automatically enables app notifications for apps that use time-sensitive notifications, but you can change the settings at any time. To learn more about time-sensitive notifications, see Set up a Focus.
- Go to Settings
> Siri > Announce Notifications, then turn on Announce Notifications. - Tap an app you want Siri to announce notifications from, then turn on Announce Notifications.
- For some apps, you can also choose whether to announce all notifications or only time-sensitive notifications.
For apps where you can send a reply, like Messages, Siri repeats what you said, then asks for confirmation before sending your reply. To send replies without waiting for confirmation, turn on Reply Without Confirmation.
Another option is to: Flash the iPhone indicator light for notifications - Apple Support
If nothing above helps / suits:
You may want to contact Apple's Accessibility Support Team:
See: How to contact Apple for accessibility support - Apple Support
All the best :-)