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Chapter 8 Settings 103
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 off and turn it back on again. Some carriers
require a SIM PIN to use iPhone.
Note: 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 PIN-locked.
Turn SIM PIN on or off
1 Choose Phone > SIM PIN, then turn SIM PIN on or off.
2 Enter your SIM PIN number to confirm. Unless you’ve been assigned a PIN by your
carrier, the default PIN is 1111 .
Change the PIN number for your SIM card
1 Choose Phone > SIM PIN.
2 Turn SIM PIN on, then tap Change PIN.
3 Enter your current password, then enter your new password.
4 Enter your new password again to confirm, then tap Done.
Accessing Your Carrier’s Services
Depending on your carrier, you may be able to access some of your carrier’s services
directly from iPhone. For example, you may be able to check your bill balance, call
directory assistance, and view how many minutes you have left.
Access Your Carrier’s Services
m Choose Phone. Then scroll down and tap the button for your carrier’s services.
When you request information such as your bill balance, your carrier may provide the
information in a text message. Contact your carrier to find out if there are any charges
for these services.
Safari
General Settings
You can use Google or Yahoo! to perform Internet searches.
Select a search engine
m Choose Safari > Search Engine and select the search engine you want to use.