blackjack internet phone service

Smartphone and data plan?
If I have a Samsung Blackjack, or any PDA or Smartphone, and services with AT & T, what I get a data plan? Or is it a regular plan and a text messaging plan all I need? I'm not going to use the Internet or email access on your phone in the near future, but want this phone.
You do not need a data plan to use this phone if not using the Internet. The data plan is helping people who want to use all his team without being charged an arm and a leg. Just be careful about using the phone and not go on the Internet by accident, because AT & T is very demanding, and generally do not credit your account.
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