I have a att air card bought 2/9/09 was not told that I have only 5gig cap on my 60 dollar charge a month : looked on bill online about 3/1/09 and there was not a bit usage amount so I kept using card continually: on today 3/17/09 in the morning I tried to connect was rejected code 718; called att cs this evening (Akram) said over 7 gig was used and will be charged well over a thousand dollar for next bill due ; I will keep you posted on outcome of this... read full review »