Samsung Galaxy S3: How to Unblock SIM Card

As we have learnt before, one more way to make your Samsung Galaxy SIII more secure is by turning SIM PIN on. Once this option is enabled then you will be prompted to enter 4 digit PIN whenever your turn your phone on.

See also: How to Turn SIM PIN On or Off on Samsung Galaxy S3

Turn on your SIM PIN of course will help you to avoid your phone from unauthorised access, due to everyone who will use your phone including yourself should key in 4 digit PIN when turning on the phone. But, you should remain that when you or anyone else entering the wrong PIN three times in a row, then your SIM will be blocked and you need to enter your PUK to unblock it.

How to unblock blocked SIM card?
As mentioned above, you can unblocking your SIM by entering your PUK. You can get your PUK or PIN Unlocked Key by contacting your service provider. Well, here are the steps to unblock your blocked SIM card:
  1. Turn your phone off by tap and hold Power button.
  2. On pop up menu select Power off.
  3. Tap OK button to shut down your phone.
  4. Now, turn on your phone again by tapping Power button until your phone is turned on.
  5. The display will tell you when the SIM card is blocked.
  6. Enter your PUK.
  7. Tap New PIN Code field, enter your new 4 digit SIM PIN then tap OK button.
  8. Enter your new 4 digit SIM PIN again to confirm your new PIN, then tap OK button.
  9. Finish. Now your SIM should be unblocked and you can use it again.

By knowing on how to unblock your blocked SIM card, now you can use your SIM card again. But, you should note that while you are trying to unblock your blocked SIM and you entering an incorrect PUK ten times in a row, then your SIM will be blocked permanently or in other words it will no longer can be used and you should buy the new ones. So, hope it helps :)

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