How to add a password to your SIM card and why it’s important
What is a SIM card password and how does it work?
A SIM card password is a four-digit numerical code that blocks access to the operator's network. In other words, failure to enter the correct password blocks the cell phone from making or receiving calls, sending or receiving messages, and surfing the internet using mobile data (3G, 4G or 5G).
To activate this feature you usually need to use the password set by the operator, which can be found on the card that comes with the SIM card. To increase the level of security, we recommend changing it to a combination of your choice. In this way, you make it more difficult for a bad character to use your number without your authorization.
However, remember that when you activate the SIM card password, you will be asked for it every time the phone is turned on or restarted. Also, make sure you choose a password that is easy to remember, because you won't be able to reset it afterwards.
If the password is entered incorrectly three times in a row, the SIM card will be blocked and you will have to enter another code, called the PUK (Personal Unblocking Key), to unblock it. The PUK also appears on the operator's card and is made up of eight digits. If the PUK is entered incorrectly ten times in a row, the SIM card will be permanently blocked and you will have to request a new SIM card from the operator.
Why use a SIM card password?
Using a SIM card password is a way of increasing your digital security, as it prevents unauthorized people from using your number if your device is lost or stolen. This way, malicious people with access to your SIM card won't be able to send messages or make misleading calls to your contacts, pretending to be you.
In other words, when activated, the password acts as an extra layer of protection for your SIM card. This can be especially important if you have a post-paid or control plan, which has a monthly consumption limit that a scammer could take advantage of.
It can also be useful to prevent criminals from gaining access to your contact information. So, adding a password can be an advantage if you want to preserve your privacy and protect your data.
How do I activate the SIM password on Android?
The process for activating the SIM card password on Android may vary slightly depending on the make and model of the device, but in general, it follows these steps:
- Access your phone's Settings;
- Tap the Security and Privacy or Biometrics and Security option;
- Tap the option to Configure SIM lock or Other security settings;
- Tap the option to Lock SIM card or Lock chip;
- Activate the switch next to the option;
- Enter your operator's default PIN or a combination of your choice and tap OK.
How do I activate the SIM passcode on iOS?
The process for activating the SIM passcode on iOS is simpler and follows these steps:
- Access the phone's Settings app;
- Tap the Cellular option;
- Tap on the SIM PIN option;
- Activate the switch next to the option;
- Enter your operator's default PIN or a combination of your choice and tap OK.
Conclusion
Activating the SIM card password is a simple and effective way of protecting your mobile number from bad actors if your device is lost or stolen. By using the SIM card password function, you prevent unauthorized people from using your data, voice, and SMS plan, increase your security, and protect your contacts from scam attempts using your number.
