The SIM card holds your identity to the network. What can you do to prevent it from being stolen? That’s where PIN and PUK come in. They form the security settings for your SIM card.
A PIN (personal identity number) code is a four -digit code that gives access to the SIM card. You can set up your PIN on your mobile phone. Once you activate a PIN, you can use the phone only after the PIN is entered. Even if you remove the SIM card and put it in a different handset, it will still ask you for the PIN. Thus your SIM card (not the handset) is protected from theft or unauthorised use.
The disadvantage of having a PIN is you must remember the PIN and enter it correctly to use the phone. If you enter it incorrectly three times, your SIM will be blocked. That means you won’t be able to make any calls. You’ll be asked to provide the PUK (personal unlocking key) code. If you can provide the correct PUK code, you get another opportunity to enter a new PIN. The PUK code comprises eight digits. You have to get the PUK code from your carrier. Do not try to guess your PUK code. If you enter the PUK code incorrectly six times (sometimes 10), your SIM card will be permanently blocked. What this means is you have to buy a new SIM.
PIN and PUK are used to control normal use of the phone. These codes are usually referred to as PIN1 and PUK1, respectively. Another pair of codes called PIN2 and PUK2 can be used for special functions. You can use PIN2 and PUK2 to restrict outgoing calls to a few numbers — in case you are leaving your phone with strangers or children.
Unlocking Mobile Phones
If your mobile phone is SIM locked, you can unlock it by calling your carrier — provided you have fulfilled its conditions for unlocking. Naturally, unlocking is not the top priority of customer service staff. You can expect some delays or stalling tactics. Most carriers will tell you the unlocking instructions over the phone. Some will send you a letter. Unlocking the phone sometimes can take a week or two.
Can you unlock the handset without going through your carrier? The Internet is full of ads that offer to unlock your phone for a fee. In addition, you can see ads about “phone clips” — which purportedly unlock phones by reprogramming the software. Keep in mind most unlock codes are generated randomly — not mathematically. So it’s debatable how far third parties are successful in unlocking codes. Remember that warranty becomes void when you unlock the phone by yourself or through third parties.
In UK, no specific laws prohibit unlocking as long as the IMEIs are not changed. Unlocking a phone without the carrier’s consent is usually in breach of agreement with the carrier.
For further information regarding locking and unlocking mobile phones, you can call on Orange Helpline Number and get in touch with its team.