Sorry about the picture quality,hope you can get the idea.
Well ovalball, that is what I was suspecting ... you mislead me by saying the MUTE CAMERA icon is near the "my home address"
. ... never mind though! I was thinking that it was near the address number field.
This is because you click on the BIG RED CAMERA WARNING panel when it was shown, so you mute the SPOKEN ALERT voice so the system shows you this icon. I think that when you click on it the voice will go back for SPOKEN ALERT.
You can also go into the WARNING submenu and switch the voice or FULL sign back (instead of SIMPLE).
Cheers!