Why does my phone have a black circle on it?

[Android Central Question]

I have tryed

rebooting my phone nothing will help

 

[B. Diddy]

Welcome to Android Central! More details sure would help. Which phone? Where's the circle? Show us a screenshot: http://forums.androidcentral.com/ge...ide-how-post-screenshots-android-central.html. You'll have to register on this forum first. https://forums.androidcentral.com/ask-question/409154-join-android-central-community.html