The article is wrong about t-mobile. Quoting directly from their site (shop->plans->mobile broadband) (and note how all of them are described as "overage free"

The article is wrong about t-mobile. Quoting directly from their site (shop->plans->mobile broadband) (and note how all of them are described as "overage free") "No overages! (After 10 GB, data speeds are slowed until the next billing cycle)" e.g. http://www.t-mobile.com/shop/plans/cell-phone-plans-detail.aspx?tp=tb1&rateplan=Even-More-webConnect-10GB-Overage-Free-Plan http://www.t-mobile.com/shop/plans/cell-phone-plans-detail.a... So there is not unlimited access at the highest network speeds, but the plan is nevertheless unlimited data -- as in you don't have to watch your consumption to avoid getting dinged with $$$/GB charges.