Call
YOU HAVE PLENTY OF ways to customize the way you make and receive calls on your Galaxy S II, such as accessing voicemail, using call forwarding, and more. Tap Call and here’s what you can do:

Call rejection. Here you can create and manage lists of phone numbers that your phone will automatically ignore and not answer.
Set reject messages. Lets you create and manages messages that rejected callers will receive when they call you.

Call alert. Lets you set how your phone acts when you receive or make calls—for example, playing a tone when a call connects, and whether your phone should play alarm and message notifications when you’re on a call.
Call answering/ending. Controls the way in which you answer and end calls, for example, allowing you to answer calls by pressing the Home key, end calls by pressing the power key, and automatically answer calls if you have a headset connected.
Turn on proximity sensor. This turns on (or off) the proximity sensor, which will turn off your phone’s LCD during calls so that you don’t accidentally interact with it while you’re talking.
TTY mode. Turn on this box to turn on Teletype mode, which lets the Galaxy S II communicate with a teletypewriter, a machine that lets deaf people make phone calls by reading and typing text.
Additional settings. This leads ...
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