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 ...

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 ...

So you’ve just seen a number starting with 0328, and now you’re wondering — 0328 which network code is this? You’re not the only one who gets confused with all these SIM codes floating around. Let’s ...

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Instead of burying them in phones, Japanese mobile carrier NTT DoCoMo wants people to start wearing their SIM cards. It has developed a SIM card that can wirelessly connect smartphones and tablets to ...