I have an iPhone SE. It’s a work phone; it’s managed. (I have no idea what they’ve changed or control).
I searched in settings for ALERT.
First item is NOTIFICATIONS. I’ve turned off “announce notifications”
Doing so, if I’ve turned off the volume on the phone, I don’t get amber alerts I had a rescue dog and amber alerts would severely affect him. If they were only for my region I would feel better. I’m in Toronto, roughly. If the amber alert is for North Bay or Thunder Bay I can’t possibly help the person involved.
There’s another setting. RINGER and ALERTS. That leads to Sounds &Haptics. That leads to RINGTONE and ALERT VOLUME. Volume can be set, but it affects both and I’m hard of hearing. It’s at full.
It leads on to a choice. RING MODE, and SILENT MODE. Somehow my choice is RING MODE and I think that’s because it’s a managed phone.
I hope this helps…
DL