Each operator has a default passcode, usually 1111, 0000, or 1234.
By default, your SIM PIN is the last four digits of your PUK. You can change your SIM PIN through your device settings. So, if you've forgotten your SIM PIN, enter a random 4-digit number, like 0000, until you're asked for your PUK code.
3 replies. Get on live chat and ask them for a PUK code before trying a third time. If you get it wrong and the SIM is blocked you have ten chances to enter the correct PUK for your SIM and you can then set a pin of your choosing. FYI - The default pin is either 0000 or 1234.
If unavailable, ensure a SIM card is properly inserted. The default SIM PIN is 1111.
What is a SIM PIN? A SIM PIN is a 4-digit code that stops people from using your SIM card when it's switched off or taken out of your phone. If you set up a SIM PIN, you'll be asked to enter the PIN when you turn on or restart your phone.
What is my SIM card PIN? The PIN code for your Three SIM card is printed on the delivery slip that comes with your SIM card. Note that you get three tries to enter the PIN, and your phone will be locked if you fail after these tries. If your phone gets locked, you'll then need to contact 3 to get a PUK code.
One final security tip for eSIMs applies to iPhone users specifically, and that's to turn on SIM Pin. SIM Pin requires you to enter a PIN every time you make a phone call or use cellular data. To turn on SIM PIN go to Settings > Carrier > SIM PIN, and toggle it on.
The PUK (Personal Unblocking Key) code is a code consisting of 8 digits. It is used to unblock your SIM card when you entered 3 times a wrong PIN code. A card blocked by the PUK code cannot be unblocked; it cannot be used any further and you have to replace it.
When you buy your SIM card, it's attached to a larger piece of plastic that you pop it out of. Your actual SIM also has a series of numbers printed on it. Your PUK code is the 8 digit number found on either the SIM or the additional SIM packaging.
The PUK (Personal Unblocking Key) code is usually an eight-digit unique number assigned to a SIM card and is available as a security feature for all SIM cards. Most mobile phones have a PIN (personal identification number) designed to prevent unauthorized usage of your phone and keep SIM details safe.
You can remove the SIM lock by performing an unlock procedure on the phone. Although the specific unlock instructions differ according to your phone model, the procedure consists of obtaining an unlock code from your existing mobile provider. You can also buy a code online if the provider is unable to give it to you.
You can use a SIM PIN to prevent access to cellular data networks. In order to use cellular data, you must enter the PIN whenever you swap SIM cards or restart your phone. Note: if you enabled a SIM PIN and forgot to PIN number, you will have limited attempts to enter the PIN number.
We suggest enabling SIM card lock in the settings to add an extra layer of security to protect your SIM card on Android if your device has a SIM card slot,” Android Police noted. Also, when setting up a SIM card lock, you are required to enter the default password set by your operator.
The SIM card on your mobile phone will become locked if you enter an incorrect personal identification number (PIN) three times. You won't be able to use your phone, except for emergency calls. To unlock it you must reset your PIN by entering your SIM card's unique unlock key (also called a PIN unblocking key or PUK).
Gently apply pressure on the pin, making sure that the PIN is being pushed straight inside and not at an angle. With a little pressure applied, the SIM card tray pops out of the slot. Carefully pull out the SIM card tray out of the slot with your fingers.
Unfortunately, there is no option for you to manually unlock your phone if forgot your PUK Code. The only option left is to call the customer support of your internet service provider to request unlocking your SIM Card.