How can I stop notifications from sounding in Silent mode on my iPhone?

How are you enabling Silent Mode? In your first post, you talk about "Silent Mode" but in the second, you talk about having the volume turned all the way down. Can you describe exactly what it is you're doing?

Silent mode should silence system notifications. It doesn't silence alarms or media players, though.

Silence iPhone - Apple Support

User-712 wrote:

1. I’m using an iPhone 16 Pro on version 18.3.2, I have three ways:

I press the small button (above on the upper left side of my phone (if facing the screen)) and activate silent mode - apps can still turn on the volume and the mail app still makes the whoosh sound

Do you have that button set to activate Silent Mode?

Use and customize the Action button on iPhone - Apple Support

2. I turn the volume all the way down and apps can turn back on my volume (even though I turned it off) and make noise, including the mail app which still whooshes

3. I have silent mode enabled AND my volume all the way down and the apps can turn on my volume and the mail app still whooshes

None of that is expected behavior.

I would try two things. First, update to iOS 18.4. Second, once that's done, force restart the phone.

Force restart iPhone - Apple Support

See if that makes a difference.

User-712 wrote:

I took your advice and upgraded to the latest version and I did the force restart and this is still happening. Any other suggestions?

Genius Bar Reservation and Apple Support Options - Apple

Does this happen on your phone?

No. If I enable Silent Mode, I no longer hear any system notifications.

User-712 wrote:

This is a VERY bad design and I’m not sure why you would do this.

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