I'm confused, just by nature, but this string isn't helping. Here's my deal: unlocked Galaxy Nexus purchased from Google; using a T-Mobile sim; want the unlimited 4G, without throttling, but they say I can only have it if I don't use my phone as a modem. I contend that they could not possibly know that I am using it as a modem other than a wild guess if a significant uptick in usage. Am I correct in that contention, and in the assumption that with a truly unlimited high speed arrangement the carrier cannot tell if I am using my phone as a modem? Thanks in advance for all responses.