This is on Straight Talk using verizon towers, And I though I though I have done this be four BUT that may have been done when I had IOS 6. The phone has seen changes with IOS 7 😕
Did you read the post above yours? That guy said exactly the same thing you did, but for some reason you thought you needed to say it again.. He beat you to the right answer. He probably has a bigger you know what, too.
n 2011 verizon released a SVDO phone which allowed voice/data ofer 3G. i think the technology may have caught up but not many phone makers are following suite. i think the SVDO phones are very power hungry and most companies dont think its worth sacrificing battery life over it. and no, its not just US carriers.