Sony 12640775 Cell Phone User Manual


 
Locking and protecting your phone
IMEI number
Every phone has a unique IMEI (International Mobile Equipment Identity) number. You
should keep a copy of this number. If your phone is stolen, your network provider can
use your IMEI number to stop the phone from accessing the network in your country.
To view your IMEI number
1
2
1 Turn off your phone, then remove the battery cover and battery.
2 Look for the 15 to 17-digit number on the label. The first 15 digits represent the
IMEI number.
SIM card protection
The SIM card lock only protects your subscription. Your phone will still work with two
new SIM cards. If one of 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 service provider.
To enable the SIM card PIN lock
1
From the Home screen, tap . .
2 Find and tap Settings > Security > Set up SIM card lock.
3 Select SIM1 or SIM2.
4 Tap Lock SIM card.
5 Enter the SIM card PIN and tap OK.
To change the SIM card PIN
1
From the Home screen, tap . .
2 Find and tap Settings > Security > Set up SIM card lock.
3 Select SIM1 or SIM2.
4 Tap Change SIM PIN.
5 Enter the old SIM card PIN and tap OK.
6 Enter the new SIM card PIN and tap OK.
7 Retype the new SIM card PIN and tap OK.
To change the SIM card PIN2
1
From the Home screen, tap .
2 Find and tap Settings > Call settings
3 Tap Select SIM card, then tap SIM1 or SIM2.
4 Tap Fixed dialing numbers > Change PIN2.
5 Enter the old SIM card PIN2 and tap OK.
6 Enter the new SIM card PIN2 and tap OK.
7 Confirm the new PIN2 and tap OK.
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