Do I really need an iPad Mini with 3G connection when I already have an iPhone 4S? The iPad Mini with 3G costs at least a hundred over dollars more than the iPad Mini Wifi-only verison. I am thinking to myself if I really need to spend that extra hundred dollars just for the 3G feature on iPad, or I could just use the tethering from my iPhone. But I can't be sure what are the drawbacks for tethering the connection to iPad Mini from iPhone. Other than having to consume battery from two devices, are there any other ramifications? Poorer connection, possible?