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 ...

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 ...

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There are a lot of great smartphones on the market right now, but it’s hard to find one that’s more well-rounded than the Samsung Galaxy S9 and its larger brother, the S9+. Both are packed with great ...

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 ...