For everyone referring to the Wifi UMA H@H or 9.99 or 19.99. YOU ARE NOT REQUIRED TO HAVE IT. I know this because I spent more weeks than I would like to get into. (sorry for yelling, a little stressed about this subject)
You need a wireless router (make and model dont matter, but then you may run into compatibility issues I first ran into)
Second, you dont need then plan. if you want to be able to have unlimited talk time and not have them deducted from your original month plan, you sign up for the 19.99 (at the time they pushed it to me) and then any time you start a call using uma its free (if you switch over to edge, gsm, what ever, after initializing the call its still free). The call just needs to start on UMA.
Third, I spent weeks arguing with the reps that no where does it say (at the time I did this, last sept / oct , yes, all that time back and forth) the plan is required to use UMA.
So after pushing and pushing, I was final able to have them say that I can use the UMA and have time mins deducted from my regular monthly bag, rather than paying any addition fees. Basically I put it this way, Why would I want to spend an additional 20 more for unlimited mins, when I dont even go though the 1000 I already have and only get 0-1 bar at my house w/o UMA.