Clear SOS circle from Phone

If I send SOS from my Phone there is appearing a circle about my Phone Icon.
How can i clear it ? How can I let dissappear the circle on my Icon ?

Circle just indicates location accuracy. It has nothing to do with SOS.

But before, it was not there and other Icons didn´t have it. Is there a way to "clear" the circle ?

I don't think there is a way to disable it, but it will clear by itself as soon as you get an accurate GPS location.

Below what accuracy value does the circle disappear?

GPS usually reports accuracy as 0. And that's when you won't have a circle.