Apple has added a new webpage to its iPad section explaining the details of the iPad Wi-Fi + 3G’s U.S. service setup and activation process. According to the page, “if you choose the 250MB plan, you’ll receive onscreen messages as you get close to your monthly data limit so you can decide whether to turn off 3G or upgrade to the unlimited plan,” later revealed to be three alerts, arriving when the user reaches 20 percent, 10 percent,…
