After you purchase and use your cellphone for an extended period of time, you can change networks. However, the phone that you're currently using may not be offered on that network. If you wish to ...

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 ...

What's the SIM unlock policy for Verizon, T-Mobile or AT&T? These are each carrier's current device unlock policy as of 2026.

The programmable Apple SIM, today for the new iPad Air 2, gives users the freedom to move from one wireless carrier to another -- in theory, at least. Love Apple or hate it, you can't deny the company ...

One common issue that some users face is their new phone not accepting their SIM card, requiring an unlock code. We will cover various methods to obtain the unlock code and troubleshoot your SIM card ...

Apple had good intentions by equipping its cellular-based iPad Air 2 and iPad mini 3 with SIM card options, thereby giving owners the flexibility to choose from a variety of short and long term data ...

(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 finish ...

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 ...