Locking and protecting your phone

IMEI number

Every phone has a unique IMEI (International Mobile Equipment Identity) number.

To view your IMEI number

1Turn off your phone, then remove the battery cover and battery.

2Look for the 15- to 17-digit number on the label. The first 15 digits represent the IMEI number.

To view your IMEI number in the phone

1From your Home screen, tap .

2Find and tap Settings > About phone > Status.

3Scroll to IMEI to view the IMEI number.

SIM card protection

The SIM card lock only protects your subscription. Your phone will still work with a new SIM card. If the SIM card lock is on, you have to enter a PIN (Personal Identity Number). If you enter your PIN incorrectly more times than the maximum number of attempts allowed, your SIM card will become blocked. You need to enter your PUK (Personal Unblocking Key) and then a new PIN. Your PIN, PIN2 and PUK are supplied by your network operator.

To enable the SIM card PIN lock

1From the Home screen, tap .

2Find and tap Settings > Security > Set up SIM card lock > Lock SIM card.

3Enter the SIM card PIN and tap OK.

To change the SIM card PIN

1From the Home screen, tap .

2Find and tap Settings > Security > Set up SIM card lock > Change SIM PIN.

3Enter the old SIM card PIN and tap OK.

4Enter the new SIM card PIN and tap OK.

5Re-type the new SIM card PIN and tap OK.

To change the SIM card PIN2

1From the Home screen, tap .

2Find and tap Settings > Call settings > Fixed Dialing Numbers > Change PIN2.

3Enter the old SIM card PIN2 and tap OK.

4Enter the new SIM card PIN2 and tap OK.

5Confirm the new PIN2 and tap OK.

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Sony Ericsson ST18i manual Locking and protecting your phone, Imei number, SIM card protection