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 network operator.
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
Tap Lock SIM card.
4
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
Tap Change SIM PIN.
4
Enter the old SIM card PIN and tap OK.
5
Enter the new SIM card PIN and tap OK.
6
Re-type 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 Fixed dialling numbers > Change PIN2.
4
Enter the old SIM card PIN2 and tap OK.
5
Enter the new SIM card PIN2 and tap OK.
6
Confirm the new PIN2 and tap OK.
To unblock a locked SIM card
1
When Enter PUK and new PIN code appears, enter the PUK code.
2
Enter a new PIN code and tap OK.
If you enter an incorrect PUK code too many times, the SIM card becomes blocked. If this
happens, contact your service provider to get a new SIM card.
Setting a screen lock
To set a screen lock
1
From your Home screen, tap > Settings > Security > Screen lock.
2
Select an option.
It is very important that you remember your screen unlock pattern, PIN or password. If you
forget this information, it may not be possible to restore important data such as contacts and
messages. Refer to Sony Customer support for more information.
To create a screen unlock pattern
1
From the Home screen, tap
.
2
Find and tap Settings > Security > Screen lock > Pattern.
3
Follow the instructions in your phone. You are asked to select a security
question that will be used to unlock the phone if you forget your screen unlock
pattern.
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