I can't really offer any help on the problem. However, I can say that the 3G/4G icons will not appear in the taskbar when I have Wi-Fi on and connected to an AP. I can't say whether the radios themselves are on or off, just that the icons aren't there.
I have had 3 Android phones and a Galaxy Tab and my 3g connection never has been active when my Wi-Fi is connected either. My 3g will become active if I lose Wi-Fi signal (like at Starbucks), but at home I have an excellent wireless network and in 3 years I have never noticed 3g active while connected to my Wi-Fi. Does seem fishy. Is your batter dying faster as a result? At least there is no ICON indicating an active 3g... could be working in the background for all I know though.
Last edited by rexd1976; 08-15-2011 at 07:04 AM. Reason: more detail
...from BB on Verizon to iPhone on AT&T and back to Verizon with the Samsung Droid Charge ...