Samsung SGH-I337 User Manual At&t Sgh-i337 Galaxy S4 English User Manual V - Page 161

3. Tap Encrypt device. For more information, read the displayed help screen. 4. Tap Encrypt external SD card to enable the encryption on SD card data that requires a password be entered each time the microSD card is connected. Tip: Make sure your battery is charged more than 80 percent. Encryption may take an hour or more. Set up/change password Use this option to set up your password when one is first required or change your current password. 1. From the Home screen, tap ➔ Settings ➔ More ➔ Security ➔ Set up/change password. 2. Enter a new password and tap Confirm. 3. Enter the new password again and tap Confirm. Set up SIM card lock Prevent another user from using your SIM card to make unauthorized calls or from accessing information stored on your SIM card by protecting the information using a PIN code. When enabled, your phone will ask for a PIN number each time you use the phone. Using this option you can also change your SIM PIN number. 1. From the Home screen, tap ➔ Settings ➔ More ➔ Security. 2. Tap Set up SIM card lock. 3. Tap Lock SIM card, enter your SIM PIN code, then tap OK. Note: You must activate Lock SIM card before you can change your SIM PIN code. 4. Tap Change SIM PIN. 5. Enter your old SIM PIN code and tap OK. 6. Enter your new SIM PIN code and tap OK. 7. Re-type your new SIM PIN code and tap OK. Forgotten SIM PIN password If you enter the wrong SIM PIN more than 3 times, you will need to contact your AT&T Customer Service Representative to get the PUK code for your device. Changing Your Settings 154