With the Luddite revival in full-swing, here are five dumbphones that can still run WhatsApp — and a few others.

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.

Ultimately it's a matter of what you want from a mobile carrier. Do you have strong opinions for or against GSM? Is there a particular brand or model of smartphone you want, and does T-Mobile offer it ...

With RCS messaging, you'll be able to enjoy features like typing indicators and the "Delivered" status message while ...

Because each GSM radio channel has a frequency bandwidth of 200 kHz, this divides into 125 radio channel carriers. In some systems, the entire frequency band may not be available, and in other systems ...

The company offered service under the Cellular One brand in most regions. Although originally a TDMA carrier in most areas, the company migrated to GSM technology.

The first touchscreen BlackBerry phone. Introduced in 2008, the Storm was a dual-band phone that supported both CDMA and GSM carriers. The original Storm touchscreen featured SurePress technology ...

Macworld Ever since Apple shocked the tech community with its announcement that it would support RCS, we’ve been waiting for ...

Always opt for the international versions of GSM unlocked handsets, as these models can connect to the widest range of bands that carriers employ all over the world, and stand the best chance of ...

So-called mobile virtual network operators (MVNOs) like Cricket and Consumer Cellular use GSM as well, since, as "virtual" operators, they piggyback on a larger carrier - in this case, AT&T's network.

These ubiquitous GSM modules have made cellular IoT devices ... it’s no longer economic for the carriers. The older technologies still occupy a significant quantity of valuable spectrum, and ...