MudRunnerTD has gone to the Dark Side

[TPC]

Help!!!!! So I was on the phone today and most of the time I use speaker in the office but just now I was out and took a call and held the pgone to my ear, half way through the conversation my screen started operating like the phone was functioning!!! And it was!! I have no idea what has happened but I now have a red dot with a white cross in the middle of the screen that does nothing and xoesnt move??? How doi get rid of it? How did i put it there? And what the hell is it for??

Try closing all the apps and see if it disappears.