The orange dot is an updated feature of iOS14 that one can notice in the latest versions of the iPhone. If your iPhone does not have that feature, it means maybe your iPhone is not the updated one. Having an orange dot in the top right corner of the screen is nothing bad. It is an additional feature that Apple provides to ensure the security and privacy of the user by indicating that an application is currently using its microphone. So, if you are on a phone call, you can glance at the center of the screen. An orange dot will appear along with the phone written as the phone has access to the microphone.