Solution & Service
Untact Integrated Platform
Launched in 2015, ONE4U's Ministry of Defense untact service helps service members stay connected with society and
reduces feelings of isolation by deploying smart payphones across military units that offer voice and video calling plus free messaging.
The Ministry of Defense smart-payphone service, Grin BI, is built on patented video-security technology and delivers video calling, voice calling, and messaging from dedicated payphones inside military bases — broadening service members' communication options with the outside world. More than 13,000 dedicated payphone terminals are currently deployed across the Army, Navy, and Air Force, with 1.5 million members joining every year — making this Korea's largest smart-payphone untact service.
Grin BI Smart-Payphone Highlights
High qualityVoice and video calling
High-quality video calls
Multiple calling channels
(standard voice and app-based calls)
Receiver-paid callsCollect call service
The receiving party can
cover the call charges with a
receiver-paid collect call service.
Text and chatMessenger service
Personal text mailboxes,
missed-message review and
real-time chat service.
ONE4U Untact Service Architecture
