If these codes don’t work for you, you should try to call your carrier or check your provider’s website to obtain the default SIM PIN. In the U.S., two of the biggest carriers – Verizon and AT&T – use 1111, while T-Mobile employs 1234 instead. As mentioned above, most carriers use defaults, but that’s not always a rule. To turn on the SIM lock feature on a device that doesn’t have it activated by default, you will need to know your phone’s default SIM PIN. In any case, it’s always a good idea to change the default code to boost the security of your device and prevent someone from simply guessing what your code is. Only by activating the SIM PIN lock can users make sure this information will be secured against any potential hacking attacks.Ī vast majority of carriers provide standard SIM PIN codes like 0000 or 1234, while others generate random codes. Actually, the small plastic card also stores other valuable data, including SMS text messages, billing information and data usage.Īs it happens, this data can’t be secured merely by setting up a PIN, passcode or some type of biometric lock on your phone. Your SIM card doesn’t just contain your address book.
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