User Guide
Call Waiting
Activate or deactivate call waiting: Choose Phone > Call Waiting, then turn Call
Waiting on or o. If you turn call waiting o and someone calls you when you’re
already on the phone, the call goes to voicemail.
Show My Caller ID
Show or hide your caller ID: Choose Phone > Show My Caller ID, then turn Show My
Caller ID on or o.
If Show My Caller ID is o, people you call can’t see your name or phone number on
their phone.
Using iPhone with a Teletype (TTY) Machine
In some regions, Teletype (TTY) machines are used by deaf or hearing-impaired people
to communicate by typing and reading text. If you have the iPhone TTY Adapter cable,
available at www.apple.com/store, you can use iPhone with a TTY machine.
Connect iPhone to a TTY machine: Choose Phone, then turn TTY on. Then connect
iPhone to your TTY machine using the iPhone TTY Adapter.
For information about using a TTY machine, see the documentation that came with
the machine.
For more information about other accessibility features of iPhone, go to www.apple.
com/accessibility.
Changing Your Voicemail Password
A voicemail password helps prevent others from access your voicemail. You only need
to enter the password when you’re calling in to get your messages from another
phone. You won’t need to enter the password when using voicemail on iPhone.
Change your voicemail password: Choose Phone > Change Voicemail Password.
Locking Your SIM Card
You can lock your SIM card, so it can’t be used without a PIN number. You must enter
the number each time you turn iPhone o and turn it back on again. Some carriers
require a SIM PIN in order to use iPhone.
Important: If you enter the PIN incorrectly three times, you may need to contact your
carrier for a Personal Unlocking Key (PUK) to enable your SIM card again. Some cellular
networks may not accept an emergency call from iPhone if the SIM is locked.
Turn the SIM PIN on or o:
1 Choose Phone > SIM PIN, then turn SIM PIN on or o.
2 Enter your SIM PIN number to conrm. Use the PIN assigned by your carrier, or your
carrier’s default PIN.
11 6 Chapter 8 Settings