I’m in the same boat. I received the Jetpack and t-mobile SIM card almost 3 weeks ago, and still no resolution. I have left 3 messages with tech connect and have not received a call back. If it turns out to not truly be unlimited and slowing after 50gb, then I’m going to stick with the 100gb plan I currently have for the same price. We’re leaving for the winter in 2 days, so I’m upset that we won’t likely have any answers or a new SIM card before we leave. I sure wish they would call me back to discuss options, since I won’t be here to receive a new SIM card.