Apple iphone 3g 16gb Guida Utente

Settings 

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. 

Choose Phone > SIM PIN, then turn SIM PIN on or off.

Enter your SIM PIN number to confirm. Use the PIN assigned by your carrier, or your 
carrier’s default PIN. 

Choose Phone > SIM PIN. 

Turn SIM PIN on, then tap Change PIN. 

Enter your current password, then enter your new password. 

Enter your new password again to confirm, then tap Done. 

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:  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 

Safari settings let you select your Internet search engine, set security options, and for 
developers, turn on debugging. 

You can use Google or Yahoo! to perform Internet searches. 

Select a search engine:  Choose Safari > Search Engine and select the search engine 
you want to use. 

By default, Safari is set to show features of the web, such as some movies, animation, 
and web applications. You may wish to turn off some of these features to help protect 
iPhone from possible security risks on the Internet.