I have this ICON on my Tour that just started to show up on my screen one day. It only pops up on my screen when I'm making a call. Inside a rectangle are five little plus signs that run from upper left to bottom right. Anyone have any ideas?
Sounds like it's the "Enhanced Audio" icon. Go to your call log, press the menu button and select "Options" to adjust those settings. You can choose from Normal, Boost Bass and Boost Treble.