I received an update on my phone a couple days ago, the update that gives you caller ID and flip book. Since I received this update, I have noticed that when my wifi is connected, the status bar shows both the wifi symbol and 4G. Has anyone else noticed this? It doesn't affect my phone performance or anything, my phone has accepted this update surprisingly well actually. My only concern is data use charges. I don't want to be charged an overuse charge for going over on my data plan when I think my phone is conneccted to wifi, but may actually be using the 4G connection. Is it downloading on wifi or 4G? I'm surethere is a way to determine this? Anyone with advice or comment?