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Phone settings 
• 
On the home screen, touch 
Settings
 then the 
All
 tab. Under 
Wireless 
&
 
networks
, touch 
More
 and then 
Airplane mode
 to turn on or off airplane 
mode.
When airplane mode is on,  is displayed on the status bar.
Setting the PIN of your SIM card
A personal identification number (PIN) is delivered with your SIM card to 
better protect your phone data. If you enable the SIM card lock, you must 
enter the PIN each time you turn your phone on. 
Before you perform the following operations, make sure you have obtained 
the PIN for your SIM card from your service provider. 
1. 
On the home screen, touch 
Settings
.
2. 
Under 
All
, touch 
Security
. 
3. 
Touch 
Set up SIM card lock
.
4. 
Select the 
Lock SIM card
 check box. 
5. 
Enter your PIN, and touch 
OK
.
6. 
Touch 
Change SIM PIN
 to change the PIN. 
 
Generally, SIM cards only allow a limited number of consecutive retries 
if an incorrect PIN is entered. If this limit is exceeded, you must enter a 
PIN unblocking key (PUK), which you can obtain from your service 
provider. The number of consecutive attempts to enter the PUK 
incorrectly is also limited. If this limit is exceeded, your SIM card will be 
permanently disabled. For details about these limits, contact your service 
provider.