The default PIN code for an AT&T SIM card is 1111. Change the default PIN code for more security. After activating SIM lock, you must enter the PIN code if you move the SIM card to another device.
What is SIM network unlock PIN number?
SIM Network Unlock Pin (NUP) is a code (usually 8 or 16 digit) that is used to unlock an Android phone from its original carrier so that you’ll be able to use it on other carriers. SIM Network Unlock Pin is unique for each phone since it’s calculated based on IMEI number.
Where do I find network unlock code?
You will need to contact the original service provider or retailer to request an unlock code. Some service providers may allow you to unlock the device for a small charge or for free, whereas others may not allow the device to be unlocked at all.
Can you unlock a permanently locked SIM card?
To unlock your SIM Card, reset the PIN by entering your SIM Card’s unique PUK (PIN Unlock Key). Note: Entering an incorrect PUK (PIN Unlock Key) 10 times will permanently lock your SIM Card. If the SIM Card becomes permanently locked, you will need to swap it for a new SIM Card.
What do I do if I forgot my sim pin?
If you forgot or don’t know your SIM PIN
- Contact the carrier that gave you the SIM card. …
- Ask your carrier to help you unlock your SIM card using the default SIM PIN or PUK code.
- If you can’t unlock your SIM card using the SIM PIN or PUK code or if an alert says, “PUK exhausted,” ask for a new SIM card.
What is a PIN PUK unlock code?
The PIN (Personal Identification Number) code is intended to protect your SIM Card from unauthorized use. … 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.
Can I unlock my phone myself?
How do I unlock my mobile phone? You can make sure your phone actually needs unlocking by inserting a SIM card from another network into your mobile phone. If it’s locked, a message will appear on your home screen. The simplest way to unlock your device is to ring your provider and ask for a Network Unlock Code (NUC).
Can you unlock a network locked phone?
When a handset is locked it means it will only work with the provider from whom you bought it. If your phone is locked it won’t automatically become unlocked when your contract expires with your provider. You’ll have to specifically ask your carrier to unlock it.
What is the network unlock code for Samsung?
Enter the code – #7465625*638*CODE# (CODE is the Samsung network unlock code sent to you).