When you restart your device, you’ll be prompted to enter the SIM PIN ( Figure B) before your phone can access the SIM. When prompted, enter a new four-digit PIN.Once you have the lock enabled, you’ll want to change the SIM PIN (otherwise people could guess the default). Locking a Verizon-branded Samsung Galaxy S4 SIM. I’ll demonstrate on a Verizon-branded Samsung Galaxy S4. Here are the steps for setting up a SIM PIN lock. Without the SIM card, you cannot use either your voice or data plan with the device. Without that PUK, your device will not be able to access the SIM card. If the three attempts fail, you must enter the PUK. If your carrier doesn’t offer up the default PIN, most often it’s either 0000 or 1111. If you cannot find your PUK, you’ll most likely have to call your carrier. Select Unlock SIM (PUK) Now to display the default PIN and PUK.In the Device column, select Phone Details.Enter the code on your phone’s screen to unblock the SIM, and create a new PINĪnd here are the steps for retrieving a PUK on a Verizon device: A new page will open, containing the PUK code for your phone.Select Wireless from the myAT&T tab at the top of the page.Here are the steps for retrieving a PUK on an AT&T device: If you run into this situation, you’ll most likely have to log into your mobile account to retrieve this information. If you attempt to do a SIM PIN Lock, and you fail to guess the original PIN, the SIM will be locked with the PUK. The SIM card also has an associated PIN Unlock Key (PUK). Now that we’ve established the why, before we get into the how of this, I need to lay down a warning or two.Ī SIM card typically comes with a default PIN, but it’s not used for locking purposes. So, how can you protect your precious data? There’s only one way: a SIM card PIN. That filesystem encryption - doesn’t protect your SIM card.That password lock on your phone - doesn’t protect your SIM card.But what about your phone number or your voice/data plans? Even with the best protection on your smartphone directory structure, someone could simply remove your SIM card - which holds your phone number, security data, billing information, and other bits of data - and place it in their device. You can protect the data on your phone to the point where no one can access it without knowing the various codes or have the exact biometric pattern of your fingerprint. For more info, visit our Terms of Use page. This may influence how and where their products appear on our site, but vendors cannot pay to influence the content of our reviews. We may be compensated by vendors who appear on this page through methods such as affiliate links or sponsored partnerships. Jack Wallen walks you through the process of adding a SIM PIN to help prevent anyone from accessing precious account information or using your data plan.

Pro tip: Protect your Android SIM card with SIM PIN lock

Verizon sim pin unlock code