I used HTC (unlocked from TMobile) on ATT for about a year in 2010. I don't remember whether it was recognized on the website or not but I wasn't charged for any data plan. For those who claim that it's ATT's right to get you on a data plan when you are using a smart phone: Yes may be they can require that if it's hidden in their Terms and Cond's however they are selling a service, "service", and I should be able to use any device that can use that service. It's a ridiculous statement saying you have to pay extra money (and get extra service) if you are using a smart phone but not for a dumb phone even though you are getting the same service. This doesn't exist anywhere else in world other than US. I am surprised that people are silent for this.
I might soon get another smart phone and will report how it goes. If ATT tries to charge me for data then I would change the carrier even though I have been with them for about 8 years.
I might soon get another smart phone and will report how it goes. If ATT tries to charge me for data then I would change the carrier even though I have been with them for about 8 years.