so I decided to check out some youtube videos on my iPhone and youtube was not working so I shut off my iPhone and turned it back on and the settings screen appeared and under wifi was another option it was the picture of the phone icon but in grey and it said carrier. I couldn't press the button though because it froze. I dont know what this means but it wont appear again if i turn it on. This is true and im not lieing and dont say i have a run on sentence please