Well, my Rezound will sometimes switch to 1xevdo especially after loss of signal, but I noticed that it will not switch back to lte on an active connection. For example, tune-in radio always runs data. I can leave it for hours on tune-in radio, and it will not switch to lte, but as soon as i turn off tune-in radio, it switches to lte right away. I am assuming that this is the way it's supposed to be?