been lurking in for a while and just got my new iphone and thought is say wat up to all....was a verizon customer and quit in middle contract to get this awesome phone...very glad i made this choice...wifey and i love it!! hate to start off with a dumb ? but since this is the 1st iphone ive ever had can any1 tell me in the top right cornor next to the battery bar there is this circle with a lock in it...it is on my phone but not my wifes any1 know what this might b...? thanx in advance