sorry guess I didnt clarify. If you root your Vibrant then you dont need to pay the monthly fee of $15.00. Which is what I did to my Vibrant. yes I have t-mobile and even if you have unlimited wed usage on your plan IT DOESNT COVER HOT SPOT. that will be an extra $15 buckaroos as I mentioned earlier. And how to Root your Vibrant. Check on XDA Developers.com they have great forums step, step instruction on how to root. BUT BE CAREFUL. Do it at your own risk it requires playing around with administrator rights.