i believe if you have AT&T it should work without having to use a seperate service but i really don't know it said something in the book about having my wireless account and having a monthly data usage limit but i really don't know but it is a turbo so it is pretty fast i ordered it offline and it wouldn't work on my computer so i am auctioning it off on here although it does not work on mine it may work on somebody else's computer but it does not come with the sim-card but it says in the book that you can call your AT&T provider and get a sim-card for it but it does have the cd and a booklet that comes with it....i hope this helps just wanted to be honest thank you and god bless
your very welcome,since posting this i have had two of my neighbors wanting this.In my area all we can get is dial-up.So everyone around here is pretty much using this things,I pray you have asafe and blessed weekened.