You can unblock a blocked SIM card using the PUK code provided by your mobile carrier. Enter the PUK code when prompted, and you can reset your SIM PIN to regain access.

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If the PUK code is also entered incorrectly too many times, the SIM card may be permanently disabled, and you will need to obtain a new SIM card to use the mobile services. Method 1: Get PUK code ...

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PUK code (Personal Unblocking Key) is a a key of 8 digits that comes with your SIM card in order to be able to unblock it in case you have forgotten your PIN code. How to retrieve a PUK code? Once the ...

Step 1: Head to Cellular Settings. To set up a second SIM card on an iPhone, go to Settings > Cellular. There you'll see your primary number and a button labeled Add eSIM.

How to activate a SIM card. If you’re using a new SIM to change networks then your phone may need to be unlocked first. Once you have unlocked your phone, you can activate your new SIM.In some ...