I purchased my Nexus S at bestbuy.com on a 2-year contract. On the website, it states that the phone will require a data plan on contract. However, when I received the phone in the mail and put in my SIM card, I found out that I had no 3G service. I gave T-Mobile a call and they gave me a 1-month free trial of 3G which just ended a few days ago. I gave them a call after the trial ended and told them that I don't want 3G anymore. Now my phone has no data plan and there is nothing listed under "Required Services" when I check my account at t-mobile.com. This is pretty cool because I'm always in a wi-fi hotspot anyway, and this will be saving me at least $360 without having the 2 years of data. There are also two other phones (BlackBerrys) under my account and the website detected their model numbers. For the Nexus S though, it just says "Unknown Device." Maybe this is the cause of the problem? Did someone make a mistake somewhere which is making it possible for me to use my phone without a data plan? Will T-Mobile catch this mistake and force me to sign up for one? Is anyone else noticing that they can get away with not having to sign up for a data plan with their Nexus S purchased with a 2-year contract?