Is it actually GPRS you're interested in or is it the services? Other protocols also support things like tcp/ip over telephony, so if you're actually looking for something like whether the device can contact websites you probably don't want to limit yourself to just GPRS phones.
An IDE is no substitute for an Intelligent Developer.
What are you doing? You are supposed to be reading this tiny ad!
the new thread boost feature brings a LOT of attention to your favorite threads