| | Re: BB without data plan unable to connect to WiFi
If you have a BB 9000 on AT&T, they will find you and add a plan to your account. AT&T requires a data plan for all smart phones. they do periodic sweeps of their network and if they find a device without the proper data plan, they will add it.
As for your question about other phones, your guess is as good as anyone's on that issue. Most carriers will require a data plan for all smartphones. You need to check with the various carriers that serve the area where you plan to use the device and see if they have something.