I have two very basic questions about my Samsung Galaxy S3 phone. In its default configuration:
Every now and then the phone whistles. (a) What does this mean? (b) How do I change this or turn it off permanently?
A few months ago the operating system did an OTA (over-the-air) update. Now every now and then, besides this whistling, I also hear a bicycle bell ringing. (a) What does this mean and how does this differ from the whistling, that is, how is the information conveyed by the whistling different by the information conveyed by the bicycle bell ringing? (b) How do I change this sound or turn it off altogether permanently?