Perhaps it is the “4” in the iPhone 4 name (since the iPhone 3G was a 3G device) that leads to the false assumption that it’s a 4G iPhone. But I also wonder if it’s not an assumption about the device rather than an assumption about the network provider. As networks tout their newer, faster networks, perhaps those 34% of iPhone owners (as well as 29% Android owners and 24% BlackBerry owners) assume their phones are automatically a part of the 4G network.