Since the iPad was first released, sophisticated users have been getting smart to avoid unnecessary additional data costs by tethering 3G phones to the iPad when a Wi-Fi signal is NOT available. Android smartphone users have it easiest tethering ipad to a 4G phone, especially on T-Mobile. Not a surprise to see that AT&T has not been very consumer-friendly to iPhone users and has made it very difficult for their data subscribers on the iPhone to tether any devices to their 3G service. However, the Wi-Fi-only iPad oan be used on the 3G network of any carrier to avoid purchasing another expensive data plan if they are already on Sprint, Verizon, T-Mobile or a smaller regional carrier. So here is a great option especially if your carrier never intends to cap your data plan. Android users will likely be the heaviest adopters of this since most are already on other networks.
