I was really disappointed when I got a warning in January when I was only at around 2GB for the month on my AT&T iPhone "unlimited" plan. On the one hand, I like unlimited because in theory it means I never have to think about my data usage, but the warning and apparent immediately subsequent throttling I experienced for the rest of the month (~7 days) was painful enough for me to consider switching my $30 unlimited to $30 3GB (and freeing me up to change providers when the next upgrade cycle rolls around–previously I wasn't willing to give up my grandfathered unlimited plan, but I never expected "unlimited" to mean less data for the same money [and the throttling is so severe that there would have been no way for me to reasonably reach 3GB data usage]).
I'm not going to go to small claims court over this or anything, but I had goodwill towards AT&T even when the rest of the country was bashing them (coverage has been reasonably good in areas I lived while on AT&T) and that's gone now.
I'm not going to go to small claims court over this or anything, but I had goodwill towards AT&T even when the rest of the country was bashing them (coverage has been reasonably good in areas I lived while on AT&T) and that's gone now.