Learn how to setup SIM card lock on your Samsung Galaxy Tab 4. To prevent another person from using your SIM card to make unauthorized calls or from accessing information stored on your SIM card, you can protect the information by using a PIN code. When enabled, your phone asks for a PIN number each time you use the phone. Using this option you can also change your SIM PIN number.
Note: You must activate Lock SIM card before you can change your SIM PIN code.
To change your SIM PIN code:
Note
This guide will work on all Samsung Galaxy Tabs; including Samsung Galaxy Tab 4 7.0, Samsung Galaxy Tab 4 8.0 and Samsung Galaxy Tab 4 10.1.