The PUK code is unique to your SIM card, so you can only get this from your mobile network. Sometimes the network will give you this when you first get the SIM card, but not all networks do this.
When you purchase a SIM card, it comes in a little package, and the PUK code should also be included in it. If you still have the package, look for the plastic card that the SIM was snapped out of. The 8 digit PUK code should be printed on the back, together with the SIM PIN code.
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.
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.
Your SIM PIN is different to your PUK and your phone passcode. It's a 4-digit number that lets you lock your SIM card to one device. By default, your SIM PIN is the last four digits of your PUK. You can change your SIM PIN through your device settings.
If a SIM PIN security code has been entered incorrectly multiple times, the SIM will lock and require you to enter a PUK code to use your device again.
The PIN is an acronym for Personal Identification Number and represents an access code made of four digits. When you buy a SIM card, you also receive a PIN for it. You need this four-digit code to enable the SIM card once you have inserted it into your phone, to be able to access your operator's mobile network.
SIM Network Unlock Pin (NUP) is a code used to unlock an Android phone or iPhone from its original carrier so that it may be used on other carriers. This code is typically 8 or 16 digits long and is used to unlock a smartphone.
So, use the search box in the Settings app to search for SIM lock and enable it. If you accidentally locked your SIM card due to three failed attempts, your phone asks you to enter a Personal Unlock Key (PUK), an eight-digit number. This number is located on the packaging your SIM card came in.
Unlock The Phone On Your Own
First of all, you have to turn off your mobile phone and take out the SIM card. Then turn on the device without the SIM card and wait for it to show a message with the instruction to insert the SIM card. From that moment you will need to write the IMEI code to unlock the phone.
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.
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).
If you enter the PIN (Personal Identification Number) code incorrectly several times, the SIM card will be locked. You need the PUK (Personal Unblocking Key) code to unlock the device. The PIN and PUK codes are used to protect your subscription and device against unauthorized use.
Thus, it's a smooth process for the most part, and there is no dedicated cost to unlock a phone. Note that due to some phones having network bands unique to the carrier, they might not function fully well on your carrier of choice after unlocking due to missing hardware.
All SIM cards contain cryptographic keys. The secret authentication key called Ki (pronounced K-I) is unique and is stored on the ROM, a protected area of the SIM. The Ki is never exchanged between the mobile device and the network.
A PUK, which is sometimes known as a network unlocking code (NUC) or personal unlocking code (PUC), is a unique sequence of eight digits that your network must supply, as long as you fulfil certain criteria. A PUK is required when you want to unlock a phone.
The process can take up to two business days, but once it's done, you're free to take the phone to another wireless carrier.
The reason many network providers SIM lock their phones is that they offer phones at a discount to customers in exchange for a contract to pay for the use of the network for a specified time period, usually between one and three years.
If a SIM PIN security code has been entered incorrectly multiple times, the SIM will lock and require you to enter a PUK code to use your device again. Be careful! If you incorrectly enter your PUK code 10 times, your SIM will need to be replaced. Moving your SIM to another device will not fix this error.
The best way to quickly check whether a mobile phone is locked or not is to slip the SIM card out, and put in one from another network. If it can make calls, send texts, and connect to the internet, that means your phone is unlocked. Just make sure that the two SIMs don't actually connect to the same network.
Call 13 22 00 and say, 'unlock device option' when prompted.
*#*#4636#*#* Displays information about the phone, battery, and various network statistics.
*31# (Disable Caller ID)
If you want to keep your privacy and prevent others from knowing when you call them, you can disable caller ID by using this code.