User Guide

Chapter 5 Phone 55
Phone settings
Go to Settings > Phone to:
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See the phone number for your iPhone
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Change the default text message replies for incoming calls
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Turn call forwarding, call waiting, and caller ID on or o (GSM)
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Turn TTY on or o
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Change your voicemail password (GSM)
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Require a PIN to unlock your SIM when you turn iPhone on (required by some carriers)
Go to Settings > Sounds to:
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Set ringtones and volume
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Set vibration options
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Set the sound for new voicemail
Once you select a network, iPhone uses only that network. If the network is unavailable, “No
service” appears on iPhone.