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Thread: Lock SIM Card

  1. #1
    Junior Member hatipati's Avatar
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    Lock SIM Card

    SIM card lock

    When I try to set up SIM card lock under "security"I get the next window " Lock SIM Card" highlited and asking to "Enter PIN to use device". I have not set up PIN for SIM card lock before so I am not sure what I am supposed to do.

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  3. #2
    Super Moderator macuser's Avatar
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    do you have a pin code with your carrier? i think at&t sets its to the last 4 of the primary holders ssn number and then you have to change it. 0000 is also a good one.

    you can also try setting up a pin # to unlock your phone under lock screen and see if that code will unlock the sim. i never played with that setting.

    edit:its now asking me to obtain a puk code. i wouldnt play with this setting again

    edit: i logged into at&t and found my puk code and i unlocked it w a 10 digit #. it then asked me to change my pin. i can now check and uncheck the box next to lock sim card. if you have the box checked, it will ask for your pin when you restart your device.
    Last edited by macuser; 05-28-2013 at 07:33 PM.

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    Junior Member hatipati's Avatar
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    I do not know if I have a pin code with my carrier or not. The SIM card lock shows that I have only two chance left ( it started with 3 and I tried my last four digits of ssn and did not work).

    My screen lock has a password with alphabets and digits but the SIM card lock window only has keys with digits for pin.

    What is a puk code?

    I have not checked the box next to Lock SIM card so I am assuming that my SIM card is not locked. I am trying to see how to set up the password but could not do as it is asking me to "Enter PIN to use device"

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    Super Moderator macuser's Avatar
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    a puk code is a 10 digit code that can be found either on the website of your carrier or if you call your carrier and ask for your puk code. you will need this code if you lock yourself out of your phone by entering in too many guesses. i just googled at&t puk code and logged into their website and followed the directions to get to the puk code. once you enter this code into your phone, it will ask you to change your pin # and then it will unlock your phone.

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    Junior Member hatipati's Avatar
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    Thanks macuser.

  7. #6
    Super Moderator macuser's Avatar
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    Quote Originally Posted by hatipati View Post
    Thanks macuser.
    glad to help. if you plan on locking your sim w a pin, id recommend finding your puk code first before locking your phone up on yourself.

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    Junior Member hatipati's Avatar
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    Thanks for the advice. I am new to the android O/S and was going thru all the different settings and apps on my 2 weeks old S4. I think I will pass on locking the SIM with a pin code.

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