How to change or remove the SIM PIN on Android, in 2 steps
Each SIM card you plug into a smartphone or tablet 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 code and use one you want. Or, you may want to disable having to enter the SIM PIN each time you start your device. Read this tutorial and see how both tasks are performed:
NOTE: This guide covers Android 7 Nougat and Android 8 Oreo. The instructions for Android 7 should also apply to Android 6 Marshmallow. 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.
First, access the SIM card lock settings in Android
First, you need to open the settings for your Android device. Then, scroll down the list of settings. To make things simpler, we added screenshots for both Android 7 Nougat and Android 8 Oreo. Android 7 is covered on the left of each image, and Android 8 is on the right.
In Android 7, tap Security, in the Personal section of settings. In Android 8, tap Security & location.
Now you see a long list of security settings. Scroll down until you find an entry named "Set up SIM card lock" (in Android 7) or "SIM card lock" (in Android 8). Tap on this entry.
Now you have opened your SIM card lock settings. You should see a switch for locking the SIM card and a setting for changing the PIN.
Read on to see how to set 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. You are now asked to enter your existing PIN, for the SIM card.
Enter your SIM card PIN code and press OK. After you do this, the requirement to enter the SIM card PIN code each time your device starts is removed. You will only have to enter your device PIN code, pattern, password, or place your finger on the fingerprint scanner.
How to change the SIM PIN on your Android smartphone or tablet
If you want to use another PIN code, 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 press 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. Enter it and tap OK.
On some smartphones and tablets you may need to confirm your newly entered PIN. If that is the case, 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 on your Android device. This PIN is required each time you start or restart your Android device, or when you introduce the SIM card into your device. It is not needed when you unlock your device after it is started, and the SIM card is already unlocked.
Did you change your default SIM PIN or did you remove the PIN requirement?
Before closing this tutorial, we are curious to know what you did: did you change your default SIM PIN code with another PIN? Or did you remove 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.