Learn how to lock and unlock the SIM PIN on the Samsung Gravity Q.
Change SIM PIN
Turn on / off SIM PIN
To change the SIM PIN code, follow these steps:
The SIM PIN code can protect your SIM from being used in other devices. When you turn on the SIM PIN lock, the device prompts you to enter the code after turning it on.
To lock and unlock the SIM card, follow these steps:
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