Cell Phone Users Guide

15
SIM Card Security
Entering Numbers From the Keypad
To enter numbers at the idle screen or any screen
that requires you to enter numbers, press the
numbers on the keypad.
If you make a mistake:
• To clear a digit, press A under Delete.
• To clear all digits, press and hold A under
Delete.
• To insert or delete a digit anywhere in the string
of digits you have entered, scroll left or right.
• To cancel, press e.
SIM Card Security
Your SIM card stores all your Contacts and
protects your personal information. Since this
information is stored on your SIM card, not in your
phone, you can remove the information by
removing your SIM card.
Note: Except for making emergency calls, your
phone will not function without the SIM
card.
To prevent unauthorized use of your phone, your
SIM card can be protected by a PIN that you enter
each time the phone is powered on. You can
change the PIN or turn off the requirement that it
be entered.
Turning the PIN Requirement On and
Off
When the SIM PIN requirement is off, your phone
can be used without entering a PIN.
Important: When the SIM PIN requirement is off,
the personal data on your SIM is not
protected. Anyone can use your phone
and access your personal data.
DE
Internet — You are ready to browse
the internet or are browsing the
internet using a secure connection.
U
Airplane Mode — Your phone is
set to Airplane Mode. See
“Temporarily Turning Off Calls” on
page 137.
Y Z
Packet Data — You are ready to
transfer packet data or are
transferring packet data.
N O
TTY — You are ready to use your
phone to make calls using a
teletypewriter device. See “Making
TTY Calls” on page 49.