Cellular Information (Wi-Fi + 3G iPads Only). Whenever you have this kind of iPad you can find two options in which you possibly can connect for the Internet: you'll be able to use your own wireless network or you can select the AT&T's nationwide information network (3G). But to use AT&T you need to make a monthly payment in order to benefit of their two plans: the first one gives you 250Mb information transfer with a monthly fee of 15$ and the second one offers you unlimited data transfer.
For the Unlimited Plan you pay twice as much. It is true, but you don't have to sit worried and count the bits and bytes. As for the privacy, Settings-Cellular Information, has two alternatives: you'll be able to add a Pin code number to block the micro SIM card so others can't mess around with you iPad, or just hit SIM PIN button and decide on a number.
Turning the 3G On or Off from the cellular information settings could be helpful for the people which are on the Limited Plan to close to that 250 Mb limit. Be careful to turn off the Information Roaming when you are on a international trip. If you leaving it on, your iPad will take over priced information. From the Account button it is possible to upgrade your plan, change it to an international plan, or edit your payment information.
