Each SIM card you plug into a smartphone has a PIN code. For your device to use the SIM card, you need to enter its PIN. Some mobile providers use standard PIN codes for all their SIM cards, like 0000 or 1234. Others generate unique PIN codes for each SIM. Whatever the case, you may want to personalize this PIN and use a code that you choose. Or, you may want to disable having to enter the SIM PIN each time you start your smartphone. Read this tutorial and see how both tasks are performed:
Before you go ahead:
This guide covers Android 8 Oreo, and Android 9 Pie. The screenshots for Android 8 are always on the left, while those for Android 9 are on the right. If you do not know what version of Android you have, read: How to check the Android version on your smartphone or tablet?
To go ahead with this tutorial, you need to know your existing SIM PIN code. If you enter this PIN incorrectly three times, the SIM card is blocked until a personal unblocking code (PUC or PUK), provided by your mobile operator, is entered. Here are 3 ways to get the PUK code of your SIM card.
Access the SIM card lock settings in Android
First, open the Settings for your Android smartphone or tablet. Then, scroll down the list of settings. In Android 8, tap Security & location, while in Android 9, tap Security & privacy.
You see a long list of security settings. In Android 8, scroll down until you find an entry named “SIM card lock” and tap on it. In Android 9 , scroll until you find “More settings” and tap on it.
In Android 8, you have opened your SIM card lock settings. In Android 9 there are two more steps to be performed. First, tap “Encryption and credentials.”
Next, tap on “Set SIM lock”. If you have a Dual-SIM smartphone, tap on “Set SIM 1 Lock” or “Set SIM 2 lock” depending on the SIM for which you want to change or disable the PIN.
In both Android versions, you should now see a switch for locking the SIM card and a setting for changing the PIN. Read on to see how to use each of these options.
How to disable the SIM PIN when starting your Android smartphone or tablet
If you do not want to enter the SIM PIN code each time you start your Android smartphone or tablet, set the “Lock SIM card” switch to Off, by tapping on it.
You are now asked to enter your existing PIN, for the SIM card. Enter the PIN code, and tap OK.
From now on, the requirement to enter the SIM lock code, each time your smartphone or tablet starts, is removed. You only have to enter your device PIN code, pattern, password, place your finger on the fingerprint scanner, or use the face unlock features on your smartphone.
How to change the SIM PIN on your Android smartphone or tablet
If you want to use another PIN code and change the existing one, in the SIM card lock settings, tap “Change SIM PIN.”
You are asked to introduce your old PIN, the one that you currently have. Enter it and tap OK.
You are now asked to enter the new PIN code that you want to use. You can enter a code that is between four and eight digits long. Enter it and tap OK. Then, you need to confirm your newly entered PIN. Type it one more time and press OK.
Now your SIM card PIN is changed. Please remember that this PIN is different than the one for your Android device. This PIN is required each time you start or restart your Android smartphone or tablet, or when you introduce the SIM card into the device. It is not needed when you unlock the device after Android has loaded, and the SIM card is already unlocked.
Did you change your default SIM PIN or did you remove the SIM PIN?
Before closing this tutorial, we want to know what you did: did you change your default SIM PIN code with another PIN? How many characters does your new PIN have? Or perhaps you removed the requirement to enter the SIM PIN code each time you start or restart your Android smartphone or tablet? Comment below and let’s discuss.