iPhone Call in progress Icons

That’s your line identifier since you have two lines.

The phone defaults the line names to “Primary” and “Secondary” during initial setup; and the flag just shows the 1st letter.

If you renamed your lines (e.g. to “T-Mobile” and “Verizon”) it would display either a T or a V.

deggie:

Good point.

But to get that signal indication would there not need to ALSO be Hard SIM in addition to the eSIM ?… 🤔

Blaq…. :

Is your primary AT&T line an eSIM … or a Hard-SIM?

Is there any hard SIM physically installed?

You can also check in Settings -> Mobile[Cellular] -> Mobile[Cellular] Plans.

If there are indeed two plans “showing” you can simply turn “off” the one you’re not using.

When you go to dial, are you presented with options to select a line:

(you have to “click” to get the dropdown shown below)

No, you don't have to have two lines you merely have to have a dual line phone. You have activated one, the Primary, and that is the one you are using.

His signal strength is showing two “lines” (even though only one has a signal)

When the “2nd line” is “off” … it doesn’t matter which one … the signal strength meter becomes “normal” again.

They may have activated an eSIM and it was done incorrectly. But they would need to contact AT&T to fix that issue.