How to Activate 3G on an iPad

Tap the 'Settings' icon on your iPad and press 'Cellular data' in the 'Settings' menu to open the 3-G connection wizard.
Choose your cellular network provider and data plan type from the options listed. If you don't know how much data you will use, consider selecting the 'Unlimited' or the highest limited plan to start so you will not be subject to overage charges. Once you learn your usage, you can change your plan to a lower limit and price.
Enter your credit card information to pay for your cellular service when prompted.
Enter and confirm your billing information, following the on-screen prompts to complete your account setup.
Press the 'Home' button to exit the 'Settings' app when your 3-G setup is complete. Any time you want to turn the 3-G service on or off, tap 'Settings' and choose 'Cellular data' and slide the virtual switch on or off.
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