Sony Ericsson T637 Cell Phone User Manual


 
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42 Calling
Networks
When you turn on the phone, it automatically
selects your home network if this is within
range. If it is not within range, you may use
another network, provided your network operator
has an agreement that allows you to do so. This is
called roaming.
You can select the network you want to use, or you can
add a network to your list of preferred networks. You
can also change the order in which networks are selected
during an automatic search. For all such options, scroll
to Connect, GSM Networks.
Tone signals
You can use telephone banking services or
control an answering machine by sending
tone signals (also known as DTMF tones
or touch tones) during a call.
To send the tones, press the number keys 0-9,
or .
To clear the display after the call is finished, press .
Notepad
You can use the phone to make a note of a phone
number during a call. When you press the number
keys, the person you are talking to hears tone signals.
To turn these tone signals off during the call, press
the joystick and select Turn Off Tones. When you
end the call, the number remains in the display. You
can then call the number by pressing
Call.
Showing or hiding your number
If your subscription supports the Calling
Line Identification Restriction (CLIR)
service, you can hide your phone number
when making a call.
To show or hide your phone number
1. Enter the phone number you want to call.
2. Press
More and select Call and Hide ID
or Call and Show ID.