When dealing with an unlocked or locked phone, the question is whether or not the device can work on a specific wireless network that's different than the network the phone was designed to work on. An ...

I have an SE T637 that was on my ATT GoPhone account. I have now started a regular Cingular account. I know that Cingular bought ATT, but I think the SE T637 is locked to the ATT system. Is it ...

Often, people buy their phone through their mobile carrier because it seems like the simplest option. What they may not realize is that they'll end up stuck for months or years paying it off, even if ...

There are two types of phones—those locked to a carrier and those free to use whatever carrier they want. There will come a time when you need to know which one your phone is. Thankfully, you'll have ...

Cell phones are practically essential in today’s world, but not everyone likes to be tied to a 24- or 36-month contract. With an unlocked cell phone, you can choose a pay-as-you-go or a contract-free ...

Nokia and Sony Ericsson are looking to crack the unlocked phone market in the U.S., but their quest will be an uphill battle. Marguerite Reardon started as a CNET News reporter in 2004, covering ...

Major cellular carriers — Verizon, AT&T, T-Mobile, Sprint, and others — typically lock their networks to the iPhone you buy from their stores or pay for via an installment plan. What does that really ...

A Pakistani man bribed AT&T call-center employees to install malware and unauthorized hardware as part of a scheme to fraudulently unlock cell phones, according to the US Department of Justice.