I suppose you are referring to the icon on the left next to the bluetooth. if so this is the data saver icon which does two things compresses data usage and restricts background data refresh from your apps. You can turn that off by going to settings -- connections - data usage and then- check off data saver. if you are referring to the NFC icon on the rogh you can toggle that off from settings - NFC and payments and toggling it off or scroll from the top down and select the NFC button and check it off. Hope that this helps you out.
