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. If you don't have the box, contact your operator and verify yourself to get the PUK.
Each operator has a default passcode, usually 1111, 0000, or 1234.
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).
Sim locked simply means the sim has a sim pin, which has nothing to do with the iPhone. Enter the PIN number for the sim, or get a new sim that is not locked. If you look in Settings->General->About->Carrier Lock it should say "No sim restrictions".
A SIM lock, simlock, network lock, carrier lock or (master) subsidy lock is a technical restriction built into GSM and CDMA mobile phones by mobile phone manufacturers for use by service providers to restrict the use of these phones to specific countries and/or networks.
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.
(upper-right). The default SIM PIN is 1111.
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.
(Subscriber Identity Module lock) A function in GSM cellphones that restricts the phone's use to a particular cellular carrier identified by a SIM card. SIM locks are used to ensure subscribers finish their service contracts. If the contract period is over, the phone may be unlocked by entering a code from the carrier.
You may be locked out of your account after multiple attempts with an incorrect SIM card PIN, so keep the packaging handy. Go to Settings > Security > More security settings. Tap SIM card lock.
Absolutely yes. You can remove a SIM lock on your Android device in simple ways. You can look for your carrier's contact and ask them to give you an unlock code to bypass a SIM lock.
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.
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.
Only your carrier can unlock your iPhone. Contact them and request an unlock. After you submit the request, it might take a few days to complete. Contact your carrier to check the status of your request.
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.
What's a PUK code? Your PUK (Personal Unlocking Key) is an 8-digit code unique to your SIM card. If you don't know your SIM PIN, you can use your PUK code to unlock your mobile and reset your SIM PIN.
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.
How to unlock a phone without the PUK 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.
To protect your SIM card from others using it for phone calls or cellular data, you can use a SIM PIN. Then, every time you restart your device or remove the SIM card, your SIM card will automatically lock and you'll see "Locked SIM" in the status bar. Don't try to guess your SIM PIN.