Video calling transmits both audio and camera footage in real time. Using smartphone front cameras and internet connections, users can see each other while talking. Zoom, Google Meet, Microsoft Teams, FaceTime, and LINE video calls are widely used.
The technical foundation is VoIP. Audio and video are digitized and transmitted over the internet. Quality depends on connection speed: 1.5Mbps+ recommended for 1-on-1 calls, 3Mbps+ for group calls. Wi-Fi provides stable connections, though 4G/5G also delivers sufficient quality.
The 2020 COVID pandemic drove explosive video call adoption. Remote work, telemedicine, online classes, and family visits all shifted to video calls. Ministry surveys show about 70% of first-time video call users during 2020 want to continue using the technology.
Encryption is critical for security. Zoom introduced end-to-end encryption in 2020; FaceTime has had E2EE from the start. Choose E2EE-enabled services for confidential business communications. See LINE call vs phone call differences for comparison.