Adjusting low-volume alerts for diabetic monitoring on iPhone

Hi Borzoua

welcome to this Apple (user-to-user) Community!

Re: Hearing lost issue :

I use Libre 3 sensors : Unfortunately I do not hear the sound of the default alert because is too low.

Am no expert in this area, yet your post to the community deserves some response.

You may be able to change the default alert to something that wakes you?

Eg: If there is a low-glucose alert in Settings > Notifications on your iPhone:

you may be able to change it to a custom alert sound.

Else if the default alert tone is set with Libre 3 sensors software or an app:

Perhaps there is some support available from the manufacturer for users of the Libre 3 sensors:

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Re: "My suggestion to Apple is

to let the people like me be able to adjust or choose the ringtone we can hear in sleeping time."

See if you can: Change your wake up alarm in Clock on iPhone - Apple Support

or

Seems the troublesome alarm is with the Libre 3 sensors when you are not wearing Hearing-Aids ?

Am no expert in this area, yet it seems any changes Apple could make would affect it's own software.

Else: If help is needed with an Apple Accessibility software feature:

You may want to reach out to Apple's Accessibility Support Team:

How to contact Apple for help with accessibility features - Apple Support

or

To provide feedback (or a feature request) about an accessibility feature on an Apple product,

you can email the Accessibility team: accessibility@apple.com