What the reason for dots on man phone

If you see orange or green indicators in the status bar 

With iOS 14, you might see an orange or green indicator in the status bar on your iPhone. These indicators appear when the microphone and/or camera are being used by an app.

• An orange indicator  means the microphone is being used by an app on your iPhone.

• A green indicator  means either the camera or the camera and the microphone are being used by an app on your iPhone.

when the indicator is on, access Control Center and it should tell you what's using the camera/microphone