You might decide to use a PIN for your SIM card to help prevent other people from using the cellular connection on your phone when you don’t want them to. After you've set it up, you'll be prompted to enter the SIM PIN each time you start your phone.
On Start , swipe over to the apps list, then select Settings > Network & wireless > Cellular & SIM > SIM settings.
Under Security, select Use SIM PIN.
In the SIM PIN box, do one of the following:
If this is the first time using a SIM PIN, type the default SIM PIN, then select OK. If you don’t know the default SIM PIN, visit your mobile operator’s website to see if they list it there. To avoid blocking your SIM, keep an eye on how many attempts you have left.
If you’ve already set up a SIM PIN, type your SIM PIN and then select OK.
Article ID: 4027720 - Last Review: 2017, ഓഗ 11 - Revision: 1