Watch your bills closely after upgrading. I just got my upgrade letter in the mail and there is suddenly a $7.00 monthly charge called "tech coach". I called to ask about this and was told it is a service that if I am having trouble with my phone I can call and be transferred to tech support. I did not ask for this and was not told this would be added to my line. She removed it for me, but it seems pretty dirty to have that added without any knowledge!