Originally Posted by simplysquare
probably an obvious question but have you tried the volume key? (im assuming its a G1 or hero?) if you press the volume key so it reduces the volume it comes to silent mode then if you press it again it goes to vibrate, putting it on silent kills all sounds coming from the phone excluding media like if music is playing. hope this helps?
It's an HTC Eris.
I routinely use the volume keys. Still doesn't stop various tones... I think these are when wi-fi and/or 3G go on/off - though I can't confirm yet... only really happens at night when on the charger!