Normally, when I switch to wifi, my 3G icon in the notification bar disappears until wifi signal is lost or wifi is turned off. In the last week or so, that has changed and I don't know what I did to change it.
Now, when I turn on wifi, the 3G icon remains on and appears to be actively working. When I reboot, the wifi remains on and the 3G goes away like before but this only stays this way as long as my wifi stays on. Once turned off and turned back on again, it's back to both icons again. Anyone know if this is normal??