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 ...

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.

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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 ...

If you want to switch carrier networks on your Google Pixel, you might have to unlock the phone. Here's how to unlock any Google Pixel phone.

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 ...

To unlock your phone from Verizon, the phone must be 60 days past its purchase date and not flagged as lost or stolen.