at the top of my jailbroken 4th gen itouch there's an "n" with a square on 3 sides of it near the battery life icon. i was just wondering what this was, it wasnt there before i jailbroke it.. and its always there. even if wifi is off, its there? i dont know what it is, but it doesnt seem to be doing harm to my itouch. so im just wondering what it is..?