I just got a Verizon Galaxy tab and can't figure out what one of the icons is at the top right in the Status Bar. It is a diamond shape with a cross in the middle, with ))) radiating from the right side. I've figured out the others but this one is not in the book (which could have been more thorough). It's not the WiFi or 3G icon, etc. It seems to always be in the far left position in the status bar area. Any help?