If you have a SIM card PIN enabled on your phone to access data on the SIM card, but you repeatedly enter it incorrectly, the SIM card may lock you out from further attempts. You can reset the SIM ...

Have you ever gotten a new phone only to find out it’s locked to a specific carrier? This often happens when you purchase a subsidized phone from a carrier. The carrier locks the phone so you can’t ...

Now that you’ve finally paid your phone off, Apple went ahead and announced another new iPhone. This means you’ll be upgrading, so you may be thinking about selling your existing phone to put towards ...

Years ago, unlocking GSM phones was popular here in the US because Europe got all the coolest Nokia N and E series phones, leaving us with boring flip phones. The web-based unlocking service I used ...

Major cellular carriers — Verizon, AT&T, T-Mobile, Sprint, and others — typically lock their networks to the iPhone you buy from their stores or pay for via an installment plan. What does that really ...

If you have an Apple or an Android phone—and you probably do—you have the option of locking your phone using a PIN code. With most of these phones, you can choose a four-digit PIN or a six-digit PIN.