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 ...

If you’ve bought a cellular iPad from someone other than Apple, you may later find that the iPad is locked to a particular network. If you insert a SIM from a ...

If you’re thinking of moving to a new network, and want to keep hold of the same iPhone, you may hit a snag: the device is locked to your current carrier and can’t be used with any other company.

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 ...