If the "your phone is not registered on a network" error has popped up on your Android phone, you know how frustrating it can be. Whether you want to call your family ...

AT&T has said that a massive outage that left people unable to make calls – including to 911 – was not caused by a cyber attack. The provider said thew outage was caused by “the application and ...

Modern cellular networks are built to serve millions upon millions of users, all while maintaining strict encryption across all communications. But earlier cellular networks were by no means so ...

Add Yahoo as a preferred source to see more of our stories on Google. The U.S. says Chinese hackers have penetrated America's phone networks – and are still inside them. Anton Petrus/Moment via Getty ...

Wireless data has been sent at 938 gigabits per second, or more than 9000 times the average speed of a current 5G phone connection. This would be the equivalent of downloading more than 20 ...

A US government security official urged Americans to use encrypted messaging as major telecom companies struggle to evict Chinese hackers from their networks. The attack has been attributed to a ...