"Tallman sees few prospects for a lawsuit against AT&T.
The company is still providing unlimited data usage to throttled customers, even if the speeds are so low as to make the phone useless for anything but phone calls and text messages.
The company made no promises that "unlimited" data would always be coupled with high speeds, he notes."
That is the bitter surprise you have in Europe too.
You sign for "unlimited 4 Mbps speed" and after a few Mb download you get 15 Kbps...unusable.