You'll need to get what's called a PUK code which the carrier provides as well as instructions about entering it some carriers have you enter a PUK code through the phone dialer and some have you enter it during the SIM card PIN code setup. If you are setting a SIM card PIN code for the very first time you'll need to be able to talk to the carrier who issued the SIM card. You can set up your phone to use the code but you will need to contact your carrier before you begin and be ready to contact them again if anything goes wrong. SIM PIN codes are not that common anymore, but they're often implemented in prepaid SIM cards you purchase from a store or MVNO. This ensures that a stolen phone cannot be used to make calls or prevent unauthorized access to a protected or secure phone number. Very simply, a SIM PIN is a code, usually between four and twelve digits, that prevents a SIM card from being used if placed in a new phone, or after rebooting a phone it's currently inserted into. Learn how to unlock the SIM card on your device with these easy steps.A SIM card or network lock may be preventing you from making calls or messages. Why you can trust Android Central Our expert reviewers spend hours testing and comparing products and services so you can choose the best for you.
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