So there is a deal(?) currently to order T-Mobile Sims online for $0.01 each rather than the $10.00 each that they normally cost. I am looking to purchase an iPad in the near future and my brother is looking to switch to T-Mobile when the new iPhone comes out. So here are my questions: 1) Can I use a T-Mobile Sim in a Verizon or AT&T iPad Air to get 200MB of data free? Not thinking I will need it except for a rare occasion, but the option is nice and their monthly data plans aren't bad if needed. (I have also heard it is possible to use a Verizon iPhone nano-Sim card in a Verizon iPad sim card slot and access the data plan on the iPad--I have an unlimited plan.) 2) Is it worth it for my brother to buy a nano-Sim card for the iPhone 6 if he is planning to switch carriers when it comes out? 3) Is there any other reason to consider buying a T-Mobile sim/micro/nano card?