iPhone issue with iOS 18.3.1 and ReSound HA

HarrietI ~ Your tagline indicates "iPhone 7 Plus, iOS 15" which can't run iOS 18. So what model of iPhone has the issue?...

Settings > General > About > Model Name

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Thank you, OP, for posting.

May I respectfully suggest that you update the profile information, which indicates that you have a much earlier iPhone.

As the respondent indicated, that earlier iPhone model does not support iOS 18+.

I searched and found this forum topic because my Second generation iPhone SE, from 2020, does run, and is running, iOS 18.3.1.

My issue is that there is a delay of several seconds before my ReSound Preza PZ862-DRW hearing aids will respond to ambient sounds and actually work as intended. This is very disheartening and unacceptable, if off-topic from your concern.

Thanks again.

Best, Bob.