Red dot on phone icon

Here are some steps that may help.

1. Open the Phone app. Tap the Recents tab. With All selected at the top, scroll all the way to the bottom. Then, with Missed selected at the top, scroll all the way to the bottom.
2. Open the Phone app. Tap the Voicemail tab. Select Edit, select all of the voicemails with a blue dot next to them, and select Mark As Read.
3. Back up your iPhone.
4. Restart your iPhone.
5. Update iOS on your iPhone.
6. Reset all settings.

If the issue persists, you can open the Settings > Notifications > Phone and toggle off Badges. Alternatively, you can erase your iPhone and set it up as new.

Stewji wrote:

I have a constant red dot on the phone icon on my iPhone SE. No missed calls, no voice mail messages. Can I make it go away?

Stewji wrote:

I have a constant red dot on the phone icon on my iPhone SE. No missed calls, no voice mail messages. Can I make it go away?

Verify your current stable release of iOS including bug fixes, is iOS 17.5.1

Update your iPhone or iPad - Apple Support

If this is the original SE—> Latest release of iOS 15.8.2

About iOS 15 Updates

Reset or a Force Restart,

Force restart iPhone - Apple Support