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Select Lock SIM card.
Enter your PIN and select OK.
Once the PIN lock is enabled, you must enter the PIN each time you turn on the device or access menus that require the PIN.
•If you enter an incorrect PIN too many times, your SIM or USIM card will be blocked. You must enter a PIN unlock key (PUK) to unblock the SIM or USIM card.
•If you block your SIM or USIM card by entering an incorrect PUK, bring the card to your service provider to unblock it.
Enter text
You can enter text by selecting characters on the virtual keypads.
You cannot enter text in some languages. To enter text, you should change the writing language to one of the supported languages.
››Change the text input method
Tap and hold the text input field and select Input method → a text input method (Swype or Samsung keypad).