What does ECC stand for in the image and how to remove it? What does ECC stand for in the image and how to remove it ?
ECC stands for Emergency call codes like police station, ambulance, etc.

It is even available when you are locked down and if it annoys you then you can remove it by installing different screen locks like

https://play.google.com/store/apps/details?id=com.pandasoft.unloacker.drawinglockscreen&amp;hl=en