Hello, We know it can be frustrating when the phone is asking for the SIM Network unlock pin. A SIM card lock protects your SIM from being used on other mobile devices. To lock or unlock your SIM card, follow these steps:
Go to "Settings". Tap "Biometrics and security". Tap "Other security settings". Tap "Set up SIM card lock" Tap "Lock SIM card". Enter your SIM card PIN, then tap "OK". The default PIN number is 1234. When the SIM card lock is activated, you can tap "Change SIM card PIN" to change to a new PIN number. Warning: You need to take the proper precautions to remember you new PIN number. If you forget it, you'll need to contact your network provider for support. If they are unable to help you, you'll need to factory reset your phone. To disable the SIM card lock, tap "Lock SIM card" again, then enter the PIN number. Network Lock: If you originally received your phone from a carrier and your new SIM card is from a different carrier, the original provider may have locked the device to their network.
Important: Samsung does not lock any of its devices to any particular network. You will need to contact the original service provider/carrier and request an unlock code. Some service providers/carriers may allow you to unlock the device for a small charge or for free, whereas others may not allow the device to be unlocked at all.
