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Note: Performing SIM locking steps on the iPhone will affect the device's usage, so you should not choose to use this trick if unnecessary.
Unlike setting an iPhone password to prevent unauthorized access to the device, locking an iPhone SIM will prevent unauthorized users from using features such as calls, messaging on this device. With SIM locking, your phone will require entering the SIM PIN every time you boot. If you cannot enter the PIN code, you will not be able to use the phone for messaging, calling, or using mobile data. Right now, perform SIM locking operations as follows:
Guide to Locking Your iPhone SIM for Security, Setting a SIM Password
Step 1: From the device's home screen, access the Settings app to change settings on the device.
To perform security locking of iPhone SIM, you need to search for and select the
Step 2: Then what you need to do now is to select SIM PIN as shown below.
This is the iPhone SIM locking feature that we need to explore.
Step 3: Next, to use the security lock of iPhone SIM, you need to select activate SIM PIN feature (SIM PIN).
Step 4: At this point, the system will prompt you to enter the SIM pin 'correctly' on your iPhone device.
Note: It is advisable to contact the network's customer support center to obtain information about your SIM PIN, because if you enter it incorrectly more than 3 times, your SIM will be automatically locked again.
Step 5: Once you have entered the correct SIM PIN that you are using, we can now change this PIN by selecting the Change PIN option.
Step 6: At this point, enter the new PIN and restart the device.
Step 7: Upon restarting the device, you will receive a notification that the SIM is locked. At this point, press Unlock> enter the PIN to use the phone as usual.
Note: If you forget this SIM PIN, immediately contact customer support to get help unlocking this SIM PIN.
With the notification as shown in the image, you will imagine your iPhone as if it were SIM locked (SIM LOCKED) due to network restrictions, but in reality, this is because you set a password for the SIM on your iPhone. Others might think your phone is SIM Locked and proceed to check if it's Sim Locked, quite interesting, isn't it!?
Securing your iPhone with SIM lock ensures optimal device protection. Additionally, enhance device management by leveraging Find My iPhone to locate and remotely lock your device. Encountering SIM card issues such as recognition errors or invalid notifications during installation? Stay calm and follow our guide to resolve 'invalid SIM card on iPhone' errors.
