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Apple iPhone 11 Pro Max Getting started How to enable a SIM pin
* You can enable your PIN code to secure your device and cellular services.
* Follow these steps to learn how to enable your PIN code.
* Go to the Start screen.
* Choose *Settings*.
* Scroll down.
* Choose *Mobile Data*.
* Choose *SIM PIN*.
* Enable *SIM PIN*.
* Enter the current PIN code.
* Choose *Done*.
* The PIN code for the SIM card has been enabled.
* Return to the Start screen.