My phone keeps popping up that it’s an untrusted certificate? I can figure out what that means or how to fix it?

Hi BLH1979,

We see you're posting from the Available trusted root certificates for Apple operating systems resource. Is your iPhone managed by a school or business? If so you may need to speak with them regarding any profiles installed on the device. Here's a resource with more information about that: Trust manually installed certificate profiles in iOS and iPadOS - Apple Support

Take care.

You're welcome BLH1979,

We’re glad to see it’s stopped. If it ever returns again, be sure to notice what you were doing just before the notification appears

Feel free to reach back out if you have any further questions or issues with an Apple device or service.

Have an excellent day!