More than three-quarters of Americans live in homes without landlines. But if you still have one, you may be old enough to ...

some customers could only use their phone in "SOS" mode, meaning they could only make emergency calls. After several hours of ...

In the past few years, some smartphones have evolved to gain the ability to connect to passing satellites that can route ...

It doesn't require a cell network. It doesn't require satellite. It just sends radio messages from radio to radio," Isbell ...