iphone 8 doesnt ring

Make sure the Mute switch is Off.

The Mute switch is on the left side above the Volume buttons.

If you see red/orange the Mute is active.

I see red on the mute button, but can"t get it to go off. Push on it? slide up? slide down?

I see the red, but it won't change color. push on it? slide up? slide down?