I had been struggled for fair amount of time, to get the Internet access in my Blackberry curve. Normally Blackberry is better for the Business Integrations with the Data plan is provided by the service provider. Even though Blackberry phone comes with many fancy features, there is one problem with them. You have to purchase a data plan for internet access from your GSM service provider. This weired issue was a big headache for me to get the Internet access in my Balckberry curve - I don't like to pay for the data plan to use it. with out the data plan the service provider will not give the information to access the Internet. But the lovely Blackberry have all the capable of accessing Internet without a data plan.
Here I have put the setup to get the Internet access with out a Data plan.
You have to set up your TCP settings. Follow this : Options > Advanced Options > TCP on the Blackberry and enter the correct APN setting from the list below. Here with I have put the list of known APN settings.
Lets finished. Now you need a browser. The best one is Opera Mini Browser. you download the Opera Mini and enjoy the free Internet service without the data plan. - But you have to pay the standard connection charges from your GSM service provider.