4Set the following:

When I Dial: Tap this field and select the number of digits you need to enter to have your smartphone add a dialing prefix.

Use This Dialing Prefix: Enter the prefix to be added at the beginning of the dialed number. The combination of prefix and digits you enter must add up to a complete phone number.

5Tap Done.

Example: A complete phone number in your company’s phone system has

11numbers, for example, 1-408-555-1122. When dialing from a phone that’s part of the system, you need to dial only the last five digits (51122). When you create a dialing shortcut on your smartphone, you select “5 digit numbers” for When I Dial and enter “140855” in Use This Dialing Prefix. So when you dial your co-worker’s five-digit extension (51122), your smartphone automatically dials the whole number: 1-408-555-1122.

Lock or unlock the SIM card

You can lock your SIM card to prevent unauthorized use of your mobile account. When your SIM card is locked, you must enter your PIN to turn on your smartphone to make or receive calls, except for emergency numbers. The SIM card remains locked even if you move the card to another phone.

To unlock your SIM card, turn on the smartphone and enter your PIN.

BEFORE YOU BEGIN

•Get your default PIN from AT&T.

•Make sure the phone is on and that you’re inside a coverage area (see Turn wireless services on).

1Open Phone .

2Open the application menu and tap Preferences & Accounts.

3Do one of the following:

•To lock the SIM card: Tap Lock SIM Card. Enter the PIN provided by AT&T to lock the SIM and tap Done. The SIM card locks anytime you turn off your smartphone. To turn the smartphone back on, you must enter the PIN.

•To change the PIN: Tap Change SIM Card PIN and enter the old PIN. Enter the new PIN twice and tap Done.

•To turn off SIM lock: Tap Unlock SIM Card. Enter the PIN and tap Done.

Use restricted dialing

When restricted dialing is turned on, you can make calls to or answer calls from only those numbers that are on your list of restricted numbers.

To add to or change the list, you need to enter a PIN2. If you enter an incorrect PIN2 more times than allowed by AT&T, the SIM card locks. After the SIM card locks, you need to enter a PUK2 to unlock the SIM card. Contact AT&T to learn more about restricted dialing.

BEFORE YOU BEGIN Get your PIN2 from AT&T. If you have entered your PIN2 incorrectly and your SIM card is locked, obtain your PUK2 from AT&T.

1Open Phone .

2Open the application menu and tap Preferences & Accounts.

3In Restricted Dialing, tap On or Off.

4If you turn restricted dialing on, enter the PIN2 and tap Next.

5To edit the restricted number dialing list: In Restricted Dialing, tap View Restricted Dialing List and do one of the following:

•To add an entry: Tap Add an entry and enter the PIN2. Enter the name and phone number and tap Done.

•To edit an entry: Tap the entry and enter the PIN2. Edit the information and tap Done.

Chapter 6 : Phone

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