[Jason Gin] wanted to reuse the SIM card that came with a ZTE WF721 ... he was able to work his way backwards and determine the unlock command and its PIN code. It turns out the PIN was even ...

A PUK code is required if a GSM SIM card was locked after entering the wrong PIN code three times in a row. Entering a wrong PUK code ten times in a row disables the SIM card permanently.

Here's a step-by-step guide on activating your T-Mobile SIM ... Mobile network. If you require help unlocking, ask your ...

However, Verizon is a CDMA network, so you’ll have ... Once you insert a new SIM card, you’ll be prompted to enter an unlock code. We’re not questioning whether you want to change carriers ...

Both iOS and Android devices enter this BFU state when they’re restarted, requiring you to enter your passcode (or PIN) to ...

The SIM card has important information stored on it, such as your unique identifier that connects you to a specific network ... make a device unlock request with that carrier so you can transfer ...

How to unlock an Android phone on T-Mobile The process will vary slightly depending on your phone's manufacturer, but you need to connect your device to the internet or T-Mobile network.

(Subscriber Identity Module lock) A function in GSM cellphones that restricts the phone's use to a particular cellular carrier identified by a SIM card. SIM locks are used to ensure subscribers ...

There are two numeric passwords associated with a SIM card. One is the Personal Identification Number (PIN) that the user must input each time they start the device (this can be turned off via the ...

Many of our favorite phones support more than one SIM at a time, giving you two phone networks on your phone. Some carriers ...

A SIM card is a small chip that you insert into your phone and allows you to connect to your carrier's network ... holes that look similar to the pin holes for SIM removal. These mic holes ...

If your device is locked to a specific network, then you also need the SIM card to be for that network – or to unlock your device. All mobile phones use SIM cards but they don’t all use the same size ...