While the best unlocked phones almost certainly support GSM carriers like AT&T and T-Mobile, it’s best to look for devices that work with all the major U.S. providers, including Verizon.

It isn’t hard to unlock your phone—and it’s completely ... while AT&T and T-Mobile used GSM. The quickest way to confirm that ...

(1) A cellphone that operates on any cellular carrier's network that supports the same air interface (GSM or CDMA) and frequency bands built into the device. See SIM card, SIM lock, jailbreaking ...

Early fall savings bring about the best phone deals of September from outright discounts to trade-in offers. Whether you want ...

Over the last few years, news that police, military, and intelligence organizations use portable cellular phone surveillance devices – colloquially known as the ‘Stingray’ – has gotten out ...

This messaging-oriented GSM phone is LG's first with a slide-out text keyboard. This otherwise basic model features instant messaging, class 10 GPRS, voice dialing, Java, and an internal antenna.

A PUK code is required if a GSM SIM card was locked after entering the wrong PIN code three times in a row. Entering a wrong PUK code ten times in a row disables the SIM card permanently.

However, iPhones were readily "unlocked" by hackers both in and outside ... In addition, Apple allowed the GSM iPhone to be sold without the SIM lock in Australia, Taiwan, Hong Kong and other ...

The phone has dual band WiFi 802.11ac with WiFi calling and mobile hotspot, Bluetooth 4.0, GPS as well as NFC. T-Mobile (unlocked GSM as Z1) Jan. 2014 Sony Xperia Z The Sony Xperia Z is Sony's ...

We recently compiled a list of the 10 Best Quality Penny Stocks To Buy. In this article, we are going to take a look at where ...