VoIP (Voice over Internet Protocol) is a system for transmitting voice calls over the internet, rather than a phone line.

Wi-Fi calling allows you to make calls using Wi-Fi instead of a cellular connection, and is great for folks living in areas ...

Thousands of AT&T customers are unsuccessfully searching for a signal across the country amid a nationwide telecommunication outage early Thursday morning. AT&T acknowledged the issue in a statement ...

Amid a massive wireless service outage that affected customers of numerous providers across the country Thursday, many people reported seeing SOS on their iPhones and some were urged to use wifi ...

Phone and Android users can reduce Wi-Fi calling battery drainage through settings adjustments, background app limits and ...

Microsoft's Skype has finally shut down, concluding its 22-year tenure as the once-dominant internet calling and messaging service. Microsoft acquired Skype in 2011 for $8.5 billion in what was then ...

If you want to fix the SOS displaying on your phone, here's what to do. But the issue may lie with your carrier.