Which is the truly unlimited AT&T data plan? Doesn't AT&T just throttle you after 3 or 5gb depending if you're on 3G or LTE?
Not sure about the $60 tmobile plan. When I spoke to a tmobile rep in store while playing with the Note II, she said if I purchased my own phone (nexus 4) to use on tmobiles network, it would cost $70 for 500 minutes with unlimited text and data (no throttling).
If I purchased a subsidized phone through them, same plan costs $20 more for the first $20 months of your 2 year contract to make up the cost of the phone. (Note II for example)
If I were to use the Nexus 4 on any carrier, I choose tmobile. Cheaper plans and faster Hspa+. It's only because I have "unlimited" data and excellent LTE is why I'm sticking with AT&T.
I have been paying for unlimited data since 2009 and when they moved to a tiered plan with throttling I thought I was exempt. I have no idea how I would ever check though I think I rarely if ever use more than 5GB of data.