Samsung GT-I9003/M4 ››Lock your SIM or USIM card, Next, → PIN, Confirm, Continue, Continue, → Password, lock → Lock SIM card, Set an unlock PIN code, Set an unlock password

2	See the on-screen instructions and example patterns
3	and select Next (if necessary).
	Draw a pattern by dragging your finger to connect at
4	least 4 dots.
	Select Continue.
5	Draw a pattern again to confirm.
6	Select Confirm.
Set an unlock PIN code
1	In Idle mode, open the application list and select
	Settings → Location and security → Set screen lock
2	→ PIN.
	Enter a new PIN (numeric) and select Continue.
3	Enter the PIN again and select OK.

Set an unlock password

1	In Idle mode, open the application list and select
	Settings → Location and security → Set screen lock
2	→ Password.
	Enter a new password (alphanumeric) and select
3	Continue.
	Enter the password again and select OK.

››Lock your SIM or USIM card

You can lock your device by activating the PIN supplied with your SIM or USIM card.

1	In Idle mode, open the application list and select
	Settings → Location and security → Set up SIM card
2	lock → 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.

30Getting started