I am using a old Sony Ericsson J100i after I had lost my Android. Unknowingly may be I have pressed some key...I am not sure of...suddenly the handset went to silent mode (Vibrate Only) and a Blue Symbol came up on the home screen. I have tried a lot by resetting the phone, searching in web and downloading User's Manual but in vain that found noting...
Can anyone help me out as I really want a solution to this...as I am out of my hometown for my child's treatment...