What is and how do I get rid of this on-screen circle, which lists commonly used apps when touched?

[AC Question]

There a translucent circle with two other circles inside it on my screen. I can move it around to any spot on the screen. If I touch it, it opens up a sort of quick menu of frequently used apps. I don't know where it came from. It just popped up on my screen one day. I'd like to get rid of it but don't know how.

 

[B. Diddy]

Welcome to Android Central! Which phone? Are you talking about this? http://forums.androidcentral.com/samsung-galaxy-s6/513901-what-little-circle-three-dots-inside.html

Can you show us a screenshot? http://forums.androidcentral.com/ge...ide-how-post-screenshots-android-central.html. You'll need to register on this forum first.