What do I do if my SIM card is blocked? What does “Enter PUK code” mean?

What do I do if my SIM card is blocked? What does “Enter PUK code” mean?

If your SIM card is blocked, this is a different issue to it not working properly. If your SIM card is not working properly, check out our relevant post here. If your SIM card is blocked, often you have entered the wrong PIN code too many times. It usually takes three to five wrong entries for your SIM to lock itself. This can be frustrating, but this protects you from someone trying to access your phone and your personal information. It will also stop potential hackers making calls if your cell phone is lost or stolen.

You may see “PIN blocked” or “Enter PUK code” on your cell phone display. The PUK code stands for PIN Unblocking Key. In the U.S., the PUK code is rarely provided when you get your subscription. If you do not have your PUK code, contact the Customer Care service of your cell phone company, give them your phone number and once they are sure it is really you, they will give you the PUK code, which you need to enter into your phone; you will then be asked to set a new PIN code. Once you have your PUK then keep it in a safe place away from your mobile as it is the key to unblocking your SIM.

Note that if you enter a wrong PUK 10 times in a row, the SIM will be permanently blocked, and you’ll need to purchase a new SIM card.

Got any further questions or comments? Let us know below or by tweeting to us at @JustAskGemalto.

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  • Rose Rico

    How can i get my simcard puk code

  • Reese Madison

    So if I get a new SIM card then does it come with a PUK number

    • JustAskGemalto

      Hi Reese,

      Your PUK code is generated by your cellular provider when needed, so no one knows what theirs is until they ask for one.
      Hope that helps,
      JustAskGemalto Team

  • Ogilegwu Uriel

    I forgot my puk code and my sim is block what am going to do

    • JustAskGemalto

      Hi Ogilegwu,

      We’d advise phoning your mobile operator’s customer service number and explaining your situation. They should be able to help you out.

      Many thanks!
      JustAskGemalto team

  • do i need credit once i got a

    to activate my new sim card do I need credit on the sim card or can I activate my new sim card without credit.???

    • JustAskGemalto

      Hi there,

      Most mobile network operators require you to top-up your PAYG SIM before it can be used. If you’re unsure, visit your local store or give them a call, they’ll be able to help you further.

      Many thanks!
      JustAskGemalto team

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  • https://osu.ppy.sh/users/11924348 Demon Hunter 00

    I have completely blocked my sim by hitting random puk codes ten times.Should I buy another sim from the same carrier having the same number.And if i do will it still have the data pack that i was using on my previous sim?

    • JustAskGemalto

      Hi there,

      If you purchase another SIM from the same mobile carrier, you can keep your number. It will also have the same data pack.

      Many thanks!
      JustAskGemalto