Why is there a circle in the top left-hand corner of my iPhone's screen?

Today, I turned my phone off and back on again and when it turned back on, there was a circle in the top left-hand corner of the screen.

When I click it, it comes up with the options "Voice Control," "Favorites," "Device," and "Home."

What is this? Is is some kind of new update? Is there a way to get rid of it?

Settings>General>Assessibilty>AssistiveT…

Settings-General-Accessibility-Assistive…

Its just a thing there that you use if your ipod doesn't really respond well to your touch. It allows you to control different features at one single place.

To delete it:

Click on settings
Click general
Click accessability
Click guided access
Turn it off

( it might be different, considering the fact that we might not have the same iphone. )

Hope i helped!

In your settings go to General then click Accessibility scroll down and you'll see 'Assistive Touch' if you click on it, you can choose wether if you want to keep the circle. The circle is used for when you it like say your home button breaks, you can use that to send you to your home screen. You can use voice control to play a song or something by just having to say the command. When you click Device it will give you options of what you want to do like raise or lower the volume or flip the screen.