Hi @ElNifto 👋
Sorry to hear you're still experiencing this issue.
Have you checked the manufacturer details of the specific device that you're using to see the maximum distance between your iPhone and your Bluetooth devices (hearing aids & speaker)?
Depending on the distance, your iPhone will automatically prioritize the Bluetooth device that is closest to your phone.
If the distance isn't the issue, I did a little research on other forms on the internet and other users suggest checking your Accessibility settings on your iPhone.
To do that:
Go to Settings
Scroll down to Accessibility>Hearing Devices
Tap Audio Routing
Select Call Audio>Always Hearing Devices
Then set Media Audio>Never Hearing Devices.
That will keep the media in the speaker and the calls in your ears.
Let me know how that goes, otherwise, you may need to contact Apple or your Bluetooth devices manufacturer's website for additional support.
Hope this helps!
... View more